Revealing mistake: In the scene where Buck causes all the pots and pans to crash while Tia and her mother are hugging, the final of the "reaction shots" is a close up of the two kids. You can see Amy Madigan squeeze their arms as a cue to make their shocked expressions; prior to this Gaby Hoffman was looking up with a neutral expression on her face. (01:33:10)
Uncle Buck (1989)
1 revealing mistake
Directed by: John Hughes
Starring: John Candy, Macaulay Culkin, Gaby Hoffmann, Jean Louisa Kelly
Continuity mistake: When Buck is on the highway driving to the house and trying to remember the kids' names, we see a white 4x4 travelling the same speed as him but several lanes over. When it cuts to a shot of the rear of Buck's car, there is a small sedan now in the left lane beside him that wasn't there before.
More quotes from Uncle Buck
Trivia: In the scene in Maizy's class near the beginning of the film, the little girl with long blonde hair sitting at the desk next to Maizy is a young Anna Chlumsky, who went on to be the star of 'My Girl' and 'My Girl 2'.
More questions & answers from Uncle Buck
Answer: You can't actually see a person, all you see is a human-sized lump under the covers. It's possible that it's just bunched-up blankets, some pillows, or even clothes.
So, I just noticed this in the movie. If you go at about 10 minutes and 21 seconds, you'll see the blankets move behind them real fast while he's on the phone.