Steve Martin is a mobster turned informant in the U.S. Witness Protection Program, but his dishonest habits are hard to break in this clever little comedy. Director Herbert Ross uses a smart screenplay, talented performers, and a great premise to make "My Blue Heaven" work a lot better than most films of its genre. Rick Moranis is the FBI agent who tries to protect Martin from mafia hitmen and more dangerously himself. Joan Cusack is priceless as a local district attorney who wants to get Martin for every little offense he commits while awaiting his court date to testify. William Hickey is also good as one of Martin's shady friends. A good little film overall. 3.5 out of 5 stars.