Wow, all i can say, wow. I've seen the prologue before, online, doesn't do it justice, everything about seeing this on the imax screen was such a joy, and i never once had any wierd feelings about heath onscreen as the joker, i was so caught up in the whole show that was going on that i never had time to think about it, and in hindsight i still don't think that it'll make a bit of a difference to the film, heath's done something wonderful and we'll all enjoy it come the movie's opening. Back to the prologue, and for some of you guys back a few pages, the smoke grenade that he puts in william fichtner's mouth is attached to his....jacket, watch as he walks away, it unravells behind him as he walks off, genius lol. Fantastic, if it's showing near you, pop down to see it, i am legend looks pretty swish on imax too.