I'm sure there is nothing I can possibly say that hasn't already been said about this movie. The acting is superb. The script is flawless. The characters are genuine. I would expect nothing less from Christopher Nolan, and from the caliber of actors that were cast.
The audience reacted with such enthusiasm to Heath Ledger, which I somewhat expected, but the degree at which he commanded every scene was fresh. I haven't witnessed something like that in a long while.
Everyone should see this movie. Not because of all the hype, but because it's a cinematic treasure, the likes of which we haven't seen in years.