Directed by: Richard Donner
Starring: Bill Murray, John Glover, Karen Allen, John Forsythe
Visible crew/equipment: When the Ghost of Christmas Present settles to the ground after floating down the stairs at Frank's brother's house, you get a brief glimpse of the wires attached to her back.
Visible crew/equipment: A stage light is reflected on Lou-Old boss' sunglasses.
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.
Ghost of Christmas Present: Sometimes you have to slap them in the face just to get their attention.
Trivia: Bill Murray slipping out of the restaurant wasn't scripted, he just slipped on wet steps.
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.