I saw this movie in IMAX during the opening weekend with my wife and just saw it for a second time yesterday with my son who just returned home. I thought it was worth paying for the IMAX both times I watched it! GREAT story/plot, and extremely well acted by all involved! This movie will NOT seem like a 2 1/2 hour film as it never has a dull moment. Heath Ledger's Joker is extremely well acted from such a great script, it should leave all Joker fans wanting more of the character (unfortunately, with a new actor). A theater employee told my wife and I that she had seen it on one of their regular screens, but after seeing a couple of IMAX scenes, she wished she had seen it on the bigger screen! Bigger picture and bigger sound! In a year of big Marvel movies, DC delivered a big answer with Dark Knight...by far the best comic movie of the year, decade, century, ever?