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: When Frank sees what he thinks is the Ghost of Christmas Future in the elevator, he flips out and accidentally clocks Grace in the jaw. She puts her right hand to her face, but in the next shot she's holding her left hand up.
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.