By LOU LUMENICK<br> TORONTO - No longer the wild and crazy guy, Steve Martin these days is more like a mild and literary guy.At 56, Martin is as much an author as he is an actor. He's working on a screenplay of his best-selling novella, "Shop Girl"; is preparing his off-Broadway adaptation of "The Underpants" for fall; and continues to contribute to The New Yorker.
SOURCE: The New York Post at 12:00AM on September 11, 2001