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                                                                    Exhibit 3.51

                          CERTIFICATE OF INCORPORATION

                                       OF

                             PLAYBOY OF SUSSEX, INC.

                                    * * * * *

     FIRST. The name of the corporation is PLAYBOY OF SUSSEX, INC.

     SECOND. The address of its registered office in the State of Delaware is
No. 100 West Tenth Street, in the City of Wilmington, County of New Castle. The
name of its registered agent at such address is The Corporation Trust Company.

     THIRD. The nature of the business or purposes to be conducted or promoted
is: The corporation shall, as one of its primary purposes, hold, own, control
and utilize liquor, intoxicating beverage, and all other appropriate licenses
and permits for the operation of, and shall operate, control and own,
restaurants, taverns, nightclubs, cabarets, inns, hotels, and resorts.

     To engage in any lawful act or activity for which corporations may be
organized under the General Corporation Law of Delaware.

     To acquire, and pay for in cash, stock or bonds of this corporation or
otherwise, the good will, rights, assets and property, and to undertake or
assume the whole

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     or any part of the obligations or liabilities of any person, firm,
association or corporation.

     To acquire, hold, use, sell, assign, lease, grant licenses in respect of,
mortgage or otherwise dispose of letters patent of the United States or any
foreign country, patent rights, licenses and privileges, inventions,
improvements and processes, copyrights, trade-marks and trade names, relating to
or useful in connection with any business of this corporation.

     To acquire by purchase, subscription or otherwise, and to receive, hold,
own, guarantee, sell, assign, exchange, transfer, mortgage, pledge or otherwise
dispose of or deal in and with any of the shares of the capital stock, or any
voting trust certificates in respect of the shares of capital stock, scrip,
warrants, rights, bonds, debentures, notes, trust receipts, and other
securities, obligations, choses in action and evidences of indebtedness or
interest issued or created by any corporations, joint stock companies,
syndicates, associations, firms, trusts or persons, public or private, or by the
government of the United States of America, or by any foreign government, or by
any state, territory, province, municipality or other political sub- division or
by any governmental agency, and as owner thereof to possess and exercise all the
rights, powers and privileges of ownership, including the right to execute
consents and vote thereon, and to do any and all acts and things necessary or
advisable for the preservation, protection, improvement and enhancement in value
thereof.

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     To borrow or raise moneys for any of the purposes of the corporation and,
from time to time without limit as to amount, to draw, make, accept, endorse,
execute and issue promissory notes, drafts, bills of exchange, warrants, bonds,
debentures and other negotiable or non-negotiable instruments and evidences of
indebtedness, and to secure the payment of any thereof and of the interest
thereon by mortgage upon or pledge, conveyance or assignment in trust of the
whole or any part of the property of the corporation, whether at the time owned
or thereafter acquired, and to sell, pledge or otherwise dispose of such bonds
or other obligations of the corporation for its corporate purposes.

     To purchase, receive, take by grant, gift, devise, bequest or otherwise,
lease, or otherwise acquire, own, hold, improve, employ, use and otherwise deal
in and with real or personal property, or any interest therein, wherever
situated, and to sell, convey, lease, exchange, transfer or otherwise dispose
of, or mortgage or pledge, all or any of the corporation's property and assets,
or any interest therein, wherever situated.

     In general, to possess and exercise all the powers and privileges granted
by the General Corporation Law of Delaware or by any other law of Delaware or by
this certificate of incorporation together with any powers incidental thereto,
so far as such powers and privileges are necessary or convenient to the conduct,
promotion or attainment of the business or purposes of the corporation.

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     The business and purposes specified in the foregoing clauses shall, except
where otherwise expressed, be in nowise limited or restricted by reference to,
or inference from, the terms of any other clause in this certificate of
incorporation, but the business and purposes specified in each of the foregoing
clauses of this article shall be regarded as independent business and purposes.

     FOURTH. The total number of shares of stock which the corporation shall
have authority to issue is five hundred (500) of the par value of One Hundred
Dollars ($100.00) each, amounting in the aggregate to Fifty Thousand Dollars
($50,000.00).

     At all elections of directors of the corporation, each stockholder shall be
entitled to as many votes as shall equal the number of votes which (except for
such provision as to cumulative voting) he would be entitled to cast for the
election of directors with respect to his shares of stock multiplied by the
number of directors to be elected, and he may cast all of such votes for a
single director or may distribute them among the number to be voted for, or for
any two or more of them as he may see fit.

     FIFTH. The name and mailing address of each incorporator is as follows:

<Table>
<Caption>
     NAME                      MAILING ADDRESS
     ----                      ---------------
                            
J. L. Rivera                   100 West Tenth Street
                               Wilmington, Delaware

F. J. Obara, Jr.               100 West Tenth Street
                               Wilmington, Delaware

A. D. Grier                    100 West Tenth Street
                               Wilmington, Delaware
</Table>

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     SIXTH. The corporation is to have perpetual existence.

     SEVENTH. In furtherance and not in limitation of the powers conferred by
statute, the board of directors is expressly authorized:

     To make, alter or repeal the by-laws of the corporation.

     To authorize and cause to be executed mortgages and liens upon the real and
personal property of the corporation.

     To set apart out of any of the funds of the corporation available for
dividends a reserve or reserves for any proper purpose and to abolish any such
reserve in the manner in which it was created.

     By a majority of the whole board, to designate one or more committees, each
committee to consist of two or more of the directors of the corporation. The
board may designate one or more directors as alternate members of any committee,
who may replace any absent or disqualified member at any meeting of the
committee. Any such committee, to the extent provided in the resolution or in
the by-laws of the corporation, shall have and may exercise the powers of the
board of directors in the management of the business and affairs of the
corporation, and may authorize the seal of the corporation to be affixed to all
papers which may require it; provided, however, the by-laws may provide that in
the absence or disqualification of any member of such committee or committees,
the member or members thereof present at any

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meeting and not disqualified from voting, whether or not he or they constitute a
quorum, may unanimously appoint another member of the board of directors to act
at the meeting in the place of any such absent or disqualified member.

     When and as authorized by the affirmative vote of the holders of a majority
of the stock issued and outstanding having voting power given at a stockholders'
meeting duly called upon such notice as is required by statute, or when
authorized by the written consent of the holders of a majority of the voting
stock issued and outstanding, to sell, lease or exchange all or substantially
all of the property and assets of the corporation, including its good will and
its corporate franchises, upon such terms and conditions and for such
consideration, which may consist in whole or in part of money or property
including shares of stock in, and/or other securities of, any other corporation
or corporations, as its board of directors shall deem expedient and for the best
interests of the corporation.

     EIGHTH. Whenever a compromise or arrangement is proposed between this
corporation and its creditors or any class of them and/or between this
corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of Delaware may, on the application in a summary
way of this corporation or of any creditor or stockholder thereof, or on the
application of any receiver or receivers appointed for this corporation under
the provisions of section 291 of Title 8 of the Delaware Code or on the
application of trustees in dissolution or of any

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receiver or receivers appointed for this corporation under the provisions of
section 279 of Title 8 of the Delaware Code order a meeting of the creditors or
class of creditors, and/or of the stockholders or class of stockholders of this
corporation, as the case may be, to be summoned in such manner as the said court
directs. If a majority in number representing three-fourths in value of the
creditors or class of creditors, and/or of the stockholders or class of
stockholders of this corporation, as the case may be, agree to any compromise or
arrangement and to any reorganization of this corporation as consequence of such
compromise or arrangement, the said compromise or arrangement and the said
reorganization shall, if sanctioned by the court to which the said application
has been made, be binding on all the creditors or class of creditors, and/or on
all the stock- holders or class of stockholders, of this corporation, as the
case may be, and also on this corporation.

     NINTH. Meetings of stockholders may be held within or without the State of
Delaware, as the by-laws may provide. The books of the corporation may be kept
(subject to any provision contained in the statutes) outside the State of
Delaware at such place or places as may be designated from time to time by the
board of directors or in the bylaws of the corporation. Elections of directors
need not be by written ballot unless the by-laws of the corporation shall so
provide.

     TENTH. The corporation reserves the right to amend, alter, change or repeal
any provision contained in

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this certificate of incorporation, in the manner now or hereafter prescribed by
statute, and all rights conferred upon stockholders herein are granted subject
to this reservation.

     WE, THE UNDERSIGNED, being each of the incorporators hereinbefore named,
for the purpose of forming a corporation pursuant to the General Corporation Law
of the State of Delaware, do make this certificate, hereby declaring and
certifying that this is our act and deed and the facts herein stated are true,
and accordingly have hereunto set our hands this 22nd day of July, 1968.

                                            /s/ J. L. Rivera
                                            -------------------

                                            /s/ F.J. Obara, Jr.
                                            -------------------

                                            /s/ A. D. Grier
                                            -------------------

STATE OF DELAWARE    )
                     ) ss:
COUNTY OF NEW CASTLE )

     BE IT REMEMBERED that on this 22nd day of July , 1968, personally came
before me, a Notary Public for the State of Delaware, J.L. Rivera, F. J. Obara,
Jr. and A. D. Grier, all of the parties to the foregoing certificate of
incorporation, known to me personally to be such, and severally acknowledged the
said certificate to be the act and deed of the signers respectively and that the
facts stated therein are true.

     GIVEN under my hand and seal of office the day and year aforesaid.

                                           /s/ [Illegible] Atwell
                                          ------------------------
                                            Notary Public

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             CERTIFICATE OF CHANGE OF LOCATION OF REGISTERED OFFICE
                             AND OF REGISTERED AGENT


     It is hereby certified that:

     1. The name of the corporation (hereinafter called the "corporation") is
PLAYBOY OF SUSSEX, INC.

     2. The registered office of the corporation within the State of Delaware is
hereby changed to 229 South State Street, City of Dover 19901, County of Kent.

     3. The registered agent of the corporation within the State of Delaware is
hereby changed to The Prentice-Hall Corporation System, Inc., the business
office of which is identical with the registered office of the corporation as
hereby changed.

     4. The corporation has authorized the changes hereinbefore set forth by
resolution of its Board of Directors.

Signed on February 18, 1977.

                                        /s/ George B. Miles
                                        -------------------------------
                                        George B. Miles, Vice President

Attest:

/s/ Howard Shapiro
- -------------------------------
Howard Shapiro, Asst. Secretary

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                    CERTIFICATE OF CHANGE OF REGISTERED AGENT

                                       AND

                                REGISTERED OFFICE

                                    * * * * *


     Playboy of Sussex, Inc. a corporation organized and existing under and by
virtue of the General Corporation Law of the State of Delaware, DOES HEREBY
CERTIFY:

     The present registered agent of the corporation is The Prentice-Hall
Corporation System, Inc., 32 Loockerman Sq., Suite L-100, Dover, DE 19901 and
the present registered office of the corporation is in the county of Kent.

     The Board of Directors of Playboy of Sussex, Inc. adopted the following
resolution on the 20th day of May, 1994.

     Resolved, that the registered office of Playboy of Sussex, Inc. in the
state of Delaware be and it hereby is changed to Corporation Trust Center, 1209
Orange Street, in the City of Wilmington, County of New Castle, and the
authorization of the present register agent of this corporation be and the same
is hereby withdrawn. and THE CORPORATION TRUST COMPANY, shall be and is hereby
constituted and appointed the registered agent of this corporation at the
address of its registered office.

     IN WITNESS WHEREOF, Playboy of Sussex, Inc. has caused this statement to be
signed by Howard Shapiro, its Vice President , and attested by Irma Villarreal,
its Secretary this 20th day of May, 1994.

                                           By /s/ Howard Shapiro
                                             -----------------------------------
                                                  Howard Shapiro, Vice President

ATTEST:

By  /s/ Irma Villarreal
    ------------------------------
        Irma Villarreal, Secretary