In one phrase, OMG! It was way cool. I think I wasn't able to cram it all inside my head in one sitting (excuse to see it again? :).
I'm thinking of having a triple feature next year, when the Extended Edition DVD comes out. First night, FOTR. Second night, TT. Third night, ROTK. :)
Some things get truncated and shortened of course, but I suppose that's to be expected. The battle scenes were amazing, though.
Yes, I want to see it again. :)