Character mistake: When Mrs. Doubtfire gets her own TV show at the end, she asks the puppet if he knows anything about England. The reply is, "I only know that it's an island", which is not true. Britain is an island, not England. (01:46:00)
Mrs. Doubtfire (1993)
1 character mistake - chronological order
Directed by: Chris Columbus
Starring: Robin Williams, Pierce Brosnan, Sally Field, Harvey Fierstein
Revealing mistake: When the Hillards are at the pool, we see Stu, with his hairy chest, on the diving board. When the shot zooms out, we see a guy with no hair on his chest, who is obviously the stunt double. (01:15:00)
Mrs. Doubtfire: My first day as a woman and I'm getting hot flashes.
Trivia: Adding to the 'carpe dentum' contribution, if you look at Pierce Brosnan when Mrs Doubtfire gets up from the table, he is moments away from bursting out laughing. According to the commentary track on the dvd, it was this reference to Dead Poets Society that tickled Brosnan but he managed to keep a straight face and so they didn't need to reshoot.
More questions & answers from Mrs. Doubtfire
Answer: Daniel was pretending to be different people that were just all very horrible, so he used different accents. This way, when the "British nanny" calls, he was hoping Miranda would instantly consider him. If he called pretending to be Ms. Doubtfire right away, she might not have basically given him the job right away. And if he used the charming British accent for all his characters, it would have lost its charm when he decided to be Ms. Doubtfire.
Bishop73
Basically this. He wanted Miranda to be frustrated by the other calls, so that Mrs. Doubtfire would seem like a refreshing change.
Azalea