Revealing mistake: When Bill and Ted, are playing Battleship, with Death, you can see at the bottom of Death's neck where the crease is of the cap that is covering the actors head to make it look bald.
Revealing mistake: When Bill and Ted leave the house with their "bad" selves, Keanu Reeves' double is seen as they move past the camera. (00:21:20)
Revealing mistake: In the scene where Bill and Ted arrive in Hell, they fall down backward when the Devil pulls a lever. If you look closely as they fall, you can see Ted (or his stunt double) holding a stick, perhaps to help break the fall.
Revealing mistake: After Evil Robot Ted dunks his own head in the basketball hoop and the head falls to the floor, you can see the hole cut in the floor where Keanu Reeves is poking his head through. (00:57:50)
Revealing mistake: When Bill and Ted are falling down to Hell, and they're playing 20 Questions, when Ted goes to give Bill a high-five, the plank Ted's laying on can be seen when his shirt stretches over it as he high-fives Bill.
Chosen answer: Kimberley Kates (who played Elizabeth in the first film) said in an interview on a B&T fan podcast that she and Diane Franklin were scheduled to reprise the roles, but then heard that they had been recast. She believed it was because the English director Peter Hewitt did not like English characters being played by American actresses.
Sierra1 ★