Plot hole: At the end of the film Woody shows what a nice chap he is by spending the 'tainted' million dollars at a charity auction. He's just made his problems much worse - he paid his solicitor a large fee to arrange the deal, so he hasn't got a million in the bank. That cheque is going to bounce so fast it will crack the plaster on the roof of the bank, and bouncing a million dollar cheque is a serious criminal offence in the US. (There is no way enough interest could have built up to cover the difference, either).
Continuity mistake: When Gage, David, Diana, and Gage's Assistant are meeting in the room, right before Diana and Gage go off for their "agreement", Gage enters the room and is buttoning the right side of the jacket down by his pants, then in a following shot, he is buttoning the same coat button.