Anyway, here are my main questions (warning: spoilers):
1. How did Owen know about the safety deposit box? I've heard speculation that the "rabbi" character set the whole thing up, and that Owen's character is his nephew. In an interrogation scene, Denzel asks the rabbi if he knows about diamonds and he says something like, "you should talk to my nephew." But even if that's true, how did the rabbi know? I would assume there's a Holocaust connection there, but how would he know about the safety deposit box? Also, could the title of the movie actually refer to whomever gave this information to Owen?
2. What the hell happened when Denzel barged in on the mayor and Jodie Foster having lunch? By giving Foster the business card with the War Crimes Commission phone number on it, was Denzel letting her know that while he knew Chase's secret, he was prepared to let it drop in return for something? Or was he giving it to her to give to the mayor so he (the mayor) could make the phone call and get the credit for bring Chase down, which would then mean the mayor owed him? Or something completely different?
3. Couldn't they have figured out which of the hostages were actually part of Owen's crew by returning everyone's clothing? The ones who didn't have any other clothes would be the ones who stormed the bank. Unless, of course, Owen thought of this and had everyone bring other clothes which would then be tossed in with the hostages' clothing. That would actually be cool, but I don't remember them showing that.
4. Did the bank employee who didn't give up his cellphone at the beginning really get beaten up by Owen? Or was that guy in on it? Remember, they go in the other room and you never actually see him being beaten up. Given that many things in the film weren't what they appeared to be, and given the couple of scenes in which hostages "acting up" were actually part of Owen's crew, and given that from what we know of Owen it seems out of character for him to savagely beat someone up, I kinda think that guy was in on it. (This one's not actually annoying me. I just find it interesting.)