When Mike first enters the theater at "Movie Sign," he's wearing the shorts and college t-shirt he was exercising in. When he exits the theater, he's wearing his normal blue jumpsuit.
When Dr. Forrester introduces the movie to Mike and the Bots, the film is a 16mm print. When the movie is interrupted due to a film burn/break, the film is a 35mm print.
During the Interocitor scene, one shot shows three pairs of underwear on the device, but after it cuts back from Crow's close up shot of turning it on, there's only one pair of underwear on the Interocitor.
Mike folds the newspaper twice.
When Mike attempts to remove the Hubble Space Telescope from the Satellite of Love's hull, his face is very sweaty in every close shot, but bone dry in every interspersed long shot of him as he controls the manipulator arms.
Before Dr. Forrester breaks his abacus apart, the sticks in it start to shake noticeably as he "calculates" on it.
When Mike and the Bots are riffing their own credits, Crow's mouth barely moves for any of his lines.
In the widescreen version, when Servo's Interocitor is revealed, Trace Beaulieu's hand is visible working Crow.