The FBI's Witness Protection Program is turned funny-side up when Steve Martin and Rick Moranis play mob informant Vinnie Antonelli and agent Barney Coopersmith in this criminally comic caper. Vinnie's got smooth moves, a swank wardrobe and a mean dance step. His identity, home and lawn mower are new, but he's still the same: a guy with an eternal scam. That makes overseer Barney a guy with a huge headache.Costars Joan Cusack, Carol Kane, Melanie Mayron and William Hickey, director Herbert Ross (The Goodbye Girl) and writer Nora Ephron (You've Got Mail) ably aid and abet the two stars. No wonder My Blue Heaven is a paradise for lovers of funny, funny stuff!