Literally, several blocks of Chicago destroyed for your entertainment, at intervals in this fine film. Surprisingly talky action-adventure. Yes, all you heard about Ledger's performance is true - its a disturbing gem. People will be talking about the pencil for months. It is a rare FX action adventure that gives almost the whole principal cast the chance to ACT in a key scene of their own. Above average FX, except the needless sonar subplot. Dark, confused fight scenes.