Deliberate mistake: In the end scene at the TV set, Scrooge tosses a coin out the window, and the camera follows the coin as it falls in slow motion. The people in the control room also watch this on their monitors. Problem is, this is a live broadcast and filming/watching something live in slow motion is impossible.
Scrooged (1988)
1 deliberate mistake - chronological order
Directed by: Richard Donner
Starring: Bill Murray, John Glover, Karen Allen, John Forsythe
Continuity mistake: After Claire hits Frank in the head with the door, she kneels down to help him up, and she has no purse. In the next shot she has a brown purse in plain sight on her left shoulder.
Lou: I don't mind you hitting me, Frank, but take it easy on the Bacardi.
Trivia: When Frank throws water on a waiter he thought was on fire, he apologizes and claims he thought the waiter was Richard Pryor. This is a reference to the time Richard Pryor, while doing cocaine, set himself on fire and ran down a busy street in L.A.
Question: When Frank travels into the future and sees an older Calvin sitting on the floor, Calvin glances up. Did Calvin see Frank?
Answer: It's a vision, not reality, so one could interpret it either way. I think it's more powerful if Calvin is seeing Frank, silently accusing him of being (at least partially) responsible for his (Calvin's) situation.