Other mistake: In the opening credits, the copyright year is shown as MCMXLVII (Roman numerals for 1947), when it should be MCMLXVII (1967).
The Odd Couple (1968)
1 other mistake
Directed by: Gene Saks
Starring: Walter Matthau, Jack Lemmon, John Fiedler, Herb Edelman
Revealing mistake: When Walther Matthau is making sandwiches for his poker pals (during the movie's first poker game), Matthau drops a slice of bread on the kitchen floor. If you look at his hand, you'll see that he flicks his thumb to make the slice of bread fall.
Vinnie: I thought he looked edgy the last couple of weeks. Don't you think he looked edgy?
Speed: No, as a matter of fact, I thought you looked edgy.