I saw it on Friday night, and I thought it was pretty great. For a first time director, the film was shot really well. There were a few weak points, and it isn't as smart as the original, but as a stand alone movie, it's good. They did take some interesting new angles in the story which makes it a seperate entity; not like the remake of Psycho from a few years back.
It's kind of like comparing the original Terminator to Terminator 2. It's easy to get blown away by the special effects and pacing of the movie, but the original is exactly that: the original. The new one will never impact me like the original did.
Oh, and before any super fanboy horror fans give me a hard time, I didn't like 28 Days Later at all, so it's not just my sort attention span that thought the movie was so good (with the fast zombies and slick production and all).