Continuity mistake: Early in the movie, we see "Woody" driving a 1969 or 1970 Red Mustang. At the end of the movie, when he is driving his friends over to the mayor's house, he is driving a much older Mustang, either a 1965 or 1966. It is red like the first one, but the car's body style is obviously very different.
Other mistake: In the scene following the piano debacle Paul Reiser's image is reversed so his name tag is on the wrong side and backwards.
