“Dirty Rotten Scoundrels” (MGM, 1988). Who’s zoomin’ who? Two con artists–a suave European played by Michael Caine and a tacky American played by Steve Martin–try to out wit each other while conning women out of their money in the French Riviera. They meet their match when a young and (supposedly) naive American heiress played by Glenne Headly comes to town. Steve Martin’s portrayal of “half-brother Ruprecht” is not to be missed. Written by Dale Launer, Stanley Shapiro and Paul Henning. Directed by Frank Oz. “Excuse me. May I go to the bathroom first?”