Beautiful game, and by far the best looking beat-em-up I have seen. I've seen the similar titles for PS2 and Gamecube, and as you would expect (being the more powerful console) the Xbox DOA3 has more beautiful visuals than any of them.
Gameplay is pretty standard beat-em-up style, but with good linking of moves and some great combinations. I actually fancy one or two of the female characters in the game, as they look so great, and getting close to realistic.
It does soon become tiresome though, like any beat-em-up, it's best for bringing the lads around after a night on the beer and having it out over a pizza and a bowl of popcorn. Still, a great game for it's genre, and I think maybe a while before a better one of this type comes out.