Exhibit 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated January 25, 2000 included in this Form 10-K, into the Company's previously filed Registration Statements, File Numbers 33-52242, 333-09547, 333-33727, 333-39889 and 333-87563. /s/ ARTHUR ANDERSEN LLP ARTHUR ANDERSEN LLP Seattle, Washington February 25, 2000