The idea is clever but the movie can't seem to pull its comic weight: Steve Martin plays a mob informer who is placed in the witness-protection program and doesn't fit into the suburban California life the Feds have picked out for him. Rick Moranis is the FBI agent assigned to protect him. Martin mugs his way through the role of an Italian wise guy from the New York streets, but his performance is never more than an impersonation. The script leaves a lot to be desired, as well. Director Herbert Ross (The Turning Point) brings some gloss to the production, but he can't seem to do much else with the material.