Sylvester Stallone's brother FRANK STALLONE in back in vogue, thanks to his part in America's current Christmas movie Fred Claus. The actor/singer plays himself in the Vince Vaughn film and admits he was reluctant to appear in the family movie at first. He says, "At first I was a little leery because I had all but given up on the film business after almost 60 films. "I wasn't getting any work and I couldn't find an agent and no one seemed to show any interest, so I rededicated myself to my music full time." But the film has given the Barfly star fresh faith in the film industry: "Working on Fred Claus was a delightful experience. I wish all film sets were as joyful."