I saw it in the theatres and it's still my movie of the year.
Bought the Blu-ray this weekend and MY GOD what a transfer!
I was so so on HD movies, mainly due to the b.s. format war we have to go through, but all Blu-ray for me now on, with the exception of Universal/Paramount/Dreamworks movies of course. I'm on the fence, though. If the HD-DVD attachment were $150 I would bite.