Deliberate mistake: When the police come into Max's office near the end, they force Franz Liebkind to drop his gun. Immediately after doing so, Franz cringes in pain, implying that the gun was dropped on his foot. However, the gun was dropped about 2 feet from where his foot would have been. It would have been literally impossible for the gun to have hit his foot.
The Producers (2005)
1 deliberate mistake
Directed by: Susan Stroman
Starring: Will Ferrell, Matthew Broderick, Uma Thurman, Nathan Lane
Continuity mistake: When Leo and Max first meet, Max throws water on Leo. When Leo leaves the office his shirt is magically dry.
Leo Bloom: Mr. Marks, you were right about one thing. You are a CPA. A Certified Public ASS-HOLE.
Trivia: In the first scene in Max's office, there is a calendar showing the date as June 16. Leopold Bloom is a character in James Joyce's Ulysses, which recounts the events of a single day. June 16th.