What Ron said, start with the early Paramount comedies, which are better and funnier than the more lavish and song heavy MGM productions. That said though MGM's A Night at the Opera is my 2nd favorite Marx Bros film right after the gloriously zany Duck Soup. Hmmm I think I'll watch a couple of these at christmas. "You're willing to pay him a thousand dollars a night just for singing? Why, you can get a phonograph record of Minnie the Moocher for 75 cents. And for a buck and a quarter, you can get Minnie."