yes, even I would have to admit the co-operative multiplayer is fun, i liked the driving in it. (Well, I would, considering that my name is The Driver, but hey)
What sort of things will be new to Halo 3, are there any new details about the game?
Halo 3 is like a sci-fi type of genre, which, to be honest, I don't like, but the actual gameplay is in-depth.