Continuity mistake: Before and during Walter's jump into the pool, Walter's shirt is buttoned, yet in the next shot underwater his shirt is completely unbuttoned. (01:29:55)
Other mistake: Nadia appealing for a lawyer to act on behalf of Mrs Yakamoto in her divorce is pointless. An American lawyer would be of no value to her: her divorce (should she decide to go through with it) would be heard in front of a Japanese court, and they are extremely stingy with women who divorce their husbands. Nadia may not know that, but Mr and Mrs Yakamoto are Japanese nationals - she is wearing traditional dress! The American lawyers would know perfectly well that the divorce would be handled by a Japanese court - the US would have no jurisdiction at all.
Continuity mistake: The paint on David's clothes differs completely from the initial paint store accident to when he's in the disco and within these shots the paint differs, even if the paint smeared.