Despite rumors of a possible season-finale drop-by and the abundance of Beatles tunes on display Wednesday night, Paul McCartney did not and perhaps will not ever grace the American Idol stage. The Fab fourth reportedly has a standing invitation to visit Idol, but his peeps "find the show cheesy," a source tells the New York Daily News, and feel "it's beneath him." But dressing up as a clown and having a seltzer fight with Jacko in "Say, Say, Say"? Not cheesy.