Continuity: At the beginning when the guy moves in with Jennifer Aniston, they are walking to their jobs in the morning and she says that the buzzer doesn't work. Well for the whole movie the buzzer is heard clearly and if it didn't work then how would she have heard him when he came in the first place?

Continuity: In the scene when George and Nina almost sleep together the phone rings and George answers it, he gets out of bed and one of his top buttons is done up; the next scene none of the buttons are done up.

Continuity: In the scene where Alan Alda has a stomach ache, they open the window and he lays down, cut away, then he is up and the window is closed...