Comedian George Burns, who turned 95 today, assured an audience of his peers in Las Vegas that he planned to stick around in show business "until I'm the only one left." After a 45-minute routine of vaudeville songs, jokes and a little soft shoe Friday night, Burns was surprised on stage by a group of celebrities who rolled out an 8-foot-tall birthday cake. "You can't help getting older, but you don't have to get old," Burns told the standing-room-only crowd. "I'm going to stay in show business until I'm the only one left." Illusionists Siegfried & Roy called Burns a "big inspiration." Phyllis McGuire of the McGuire Sisters said Burns had asked the sisters to perform with him at the London Palladium on his 100th birthday, "if we're still around." Comedian Rich Little walked on stage, doing an impersonation of Burns, complete with cigar and thick glasses. The audience roared with laughter as the two men shuffled toward each other and embraced. "I'm getting to the stage where my back goes out more than I do," Little said, still mimicking.