Other mistake: When Barney gets hit on the head by the machinery, after hearing Bamm-Bamm speak for the first time, he falls backwards, with his head falling towards Pebbles' side of the cart. So how come he ends up on his side with his head on Bamm-Bamm's side of the cart?
Other mistake: When the kids are getting off the bus after the baseball game, the bus is actually a reverse image (the door is on the wrong side of the bus and unloading on the wrong side of the street).
Other mistake: When Steve's playing the national anthem on the roof, it cuts to the kitchen while Gabby's making food. Steve can still be heard playing the anthem but is also present in the kitchen background.
Other mistake: Rocco places the bomb in the "Best Actress" envelope, but Drebin discovers the bomb in the "Best Picture" envelope during the announcement for Best Picture.
Suggested correction: No, he doesn't. He grabbed a stack of envelopes and put it in the bottom envelope. The top envelope was "Best Actress", but there were several underneath it and he ends up putting it in the "Best Picture" envelope.
Bishop73