Robert Downey Jr.: Various, Rudy Randolph III, Jimmy Chance, Self, Brian Mahoney, Brother Kenny, Bruce Winston, Cary Guthrie, Cobra, Dawson, Dirk Landers, Dr. Pummel, Elvis Presley, George Michael, John Cougar Mellencamp, John Oates, Josia, Julian Lynch, Mitzu, Mr. Music, Nicky Stompanato, Ronnie, Sean Penn, Self - Host, Skip Deaver, Tarzan, Wade, Young Paul Simon