Revealing mistake: When Wilson crashes the truck towards the end of the film, you can tell it's actually a stunt driver because he has a full head of hair.
C.H.U.D. (1984)
1 revealing mistake - chronological order
Directed by: Douglas Cheek
Starring: Daniel Stern, John Heard, Kim Greist, Christopher Curry
Continuity mistake: When Daniel Stern takes Capt. Bosch down to the sewer area for the first time, the sweat, oil and dirt stains on his tank-top change constantly. This is most noticeable when they first descend into the cellar, where the shirt looks almost perfectly clean after being extremely dirty just a split second before as they start to climb down. Also, a little later, there's all of the sudden an enormous sweat stain on his chest that disappears later.
Murphy: You must be a pretty important fella, fella.
Trivia: C.H.U.D. was a card in the "Church Of The Subgenius" card game.