EXHIBIT 99.1 Investor Contact: Ken Jones 864-597-8658 Media Contact: Debbie Atkins NEWS RELEASE 864-597-8361 DENNY'S REPORTS DECEMBER SAME-STORE SALES Spartanburg, S.C., January 6, 2005 - Denny's Corporation (OTCBB:DNYY) today reported same-store sales for its company-owned Denny's restaurants during the five-week period, 13-week quarter and 52-week year ended December 29, 2004, compared with the related periods in fiscal year 2003. Five Weeks 13 Weeks 52 Weeks Sales: Dec-2004 4Q-2004 2004 ------------------------ -------------- -------------- -------------- Same-Store Sales 4.7% 5.8% 5.9% Guest Check Average 5.3% 6.0% 4.1% Guest Counts (0.6%) (0.2%) 1.7% Restaurant Counts: 12/29/04 12/31/03 ------------------------ -------------- -------------- Company-owned 553 561 Franchised and Licensed 1,050 1,077 -------------- -------------- 1,603 1,638 Denny's is America's largest full-service family restaurant chain, consisting of 553 company-owned units and 1,050 franchised and licensed units, with operations in the United States, Canada, Costa Rica, Guam, Mexico, New Zealand and Puerto Rico. For further information on Denny's, including news releases, links to SEC filings and other financial information, please visit our website at www.dennys.com.