Exhibit 10.8 STOCK OPTION AMENDMENT AGREEMENT This Agreement is made and entered into on this 29th day of December, 2006 between Broadcom Corporation (the "Company") and the undersigned holder of one or more options to purchase shares of the Company's Class A and/or Class B common stock (the "Optionee"). WHEREAS, the Company previously granted to Optionee the options identified on attached SCHEDULE I (the "Options") to purchase shares of the Company's Class A and/or Class B common stock under the Company's 1998 Stock Incentive Plan, as amended and restated (the "Plan"); WHEREAS, the Company and the Optionee entered into a formal Stock Option Agreement (the "Option Agreement") evidencing each such Option; WHEREAS, the Board of Directors of the Company has requested that the Optionee agree to increase the exercise price per share of the currently outstanding, unexercised portion of each such Option to the higher "New Exercise Price Per Share Following Amendment" set forth for that Option on Schedule I, and the Optionee has agreed to do so; and WHEREAS, such increase to the exercise price per share for the currently outstanding, unexercised portion of each such Option will also avoid any potentially adverse tax consequences under Section 409A of the Internal Revenue Code of 1986, as amended, and any comparable provisions of applicable state tax law, with respect to the currently outstanding, unexercised portion of that Option that is potentially subject to Section 409A. NOW THEREFORE, the parties hereby agree as follows: 1. INCREASED EXERCISE PRICE. The exercise price per share set forth in the Option Agreement for the currently outstanding, unexercised portion of each of the Options listed on SCHEDULE I is hereby increased to the "New Exercise Price Per Share Following Amendment" set forth for that Option on SCHEDULE I. 2. ENTIRE AGREEMENT. This Agreement, together with the Option Agreements (to the extent not expressly amended hereby) and the Plan, represents the entire agreement of the parties with respect to the Options and supersedes any and all previous contracts, arrangements or understandings between the parties with respect to such Options. This Agreement may be amended at any time only by means of a writing signed by the Optionee and an authorized officer of the Company. 3. CONTINUATION OF OPTION AGREEMENTS. Except for the foregoing increases to the exercise prices per share of the outstanding, unexercised portion of each of the Options, no other terms or provisions of the Option Agreements for such Options or the applicable Plans have been modified as a result of this Agreement, and those terms and provisions shall continue in full force and effect. IN WITNESS WHEREOF, the parties have executed this Agreement on the day and year indicated above. BROADCOM CORPORATION BY: /s/ Henry Samueli ----------------- TITLE: Chairman of the Board and Chief Technical Officer OPTIONEE By: /s/ David A. Dull ----------------- David A. Dull SCHEDULE I AMENDED OPTION(S) TOTAL NUMBER OF CURRENTLY NUMBER OF OUTSTANDING, CURRENTLY NEW EXERCISE UNEXERCISED OUTSTANDING, PRICE PER OPTION SHARES UNEXERCISED EXERCISE PRICE SHARE SUBJECT TO OPTION SHARES PER SHARE PRIOR FOLLOWING NEW, AMENDED UNVESTED AS OF GRANT DATE OPTION NUMBER TO AMENDMENT AMENDMENT EXERCISE PRICE 12/31/2004 - --------------------------------------------------------------------------------------------- 11/03/1998 A00005 $13.63550 $20.50000 21,996 14,666 11/03/1998 A00006 $13.63550 $20.50000 10,254 10,254 8/5/2002 F07517 $10.49330 $10.68000 37,500 21,095 8/5/2002 F12698 $10.49330 $10.68000 130,000 46,875 - ---------------------------------------------------------------------------------------------