Heath Ledger lives up to all the hype I heard and he definitely is one of those villains you love to hate. I'm not sure the IMAX version of the film was considerably different than the film version, but the larger screen was nice. I couldn't pick out the 6 scenes that were filmed that way, but overall I rate it as one of the best films I've seen in years. I almost feel bad for Christian Bale as Mr. Ledger stole the show. The whole cast deserves the praise for this movie, but major props to Heath. It is for sure a must-see, and take advantage of seeing it in a theater while you can, and I'm sure DLP and IMAX make it even better.