Character mistake: When Mollie goes to Albert's office for the first time since having Mickey, Albert asks if he is walking yet, and she says no. In the next scene with Mickey, he walks, and is walking when he visits Albert's office.
Look Who's Talking (1989)
1 character mistake - chronological order
Directed by: Amy Heckerling
Starring: John Travolta, Kirstie Alley, George Segal, Olympia Dukakis
Factual error: In the beginning sequence where they show the sperm first fertilizing the egg, it is biologically incorrect - only the head part of the sperm enters an egg, everything else stays on the outside and eventually dies off.
Mollie: Grandpa, what's going on?
Grandpa: Look, I'm a hostage.
Burly Orderly: He's not a hostage. He's a mean old bastard! You see what he did to my arm? And he gave the nurse a black eye.
Trivia: Mollie's father was played by Louis Heckerling, father of the film's director Amy Heckerling.