Directed by: Ron Howard
Starring: Brian Dennehy, Steve Guttenberg, Hume Cronyn, Wilford Brimley, Don Ameche
Revealing mistake: Don Ameche's double is the one doing the elaborate dancing on the floor at the bar. You'll notice the double's hair is different and if you slow the scene down, it's clear it isn't the real actor.
Revealing mistake: When the Pillsbury alien comes in to the pool house, a bright white light turns on from the far left. It is supposed to be emanating from Pillsbury. The color is also incorrect.
Continuity mistake: Tawnee Welch massages Steve Guttenberg's right leg just after he bangs it. However, when they are talking his left leg mysteriously becomes the injured one.
Trivia: Some of the cloud effects were created by dumping colored dyes in tanks of water which were then superimposed into the shot.