I haven't actually played it, but I am very very hyped about BRUTAL LEGEND.
I watched an entire (probably about 5 hours!) walkthrough online and I've got to say, it looks FUCKING AWESOME!
Like a lot. The art for the game is epic, the mechanics seem pretty fun and easy to grasp and the storyline is pretty damn cool as well. It's basically like, your a roady and you wake up in this world that is basically what would happen if every heavy metal album cover ever exploded at once. It's by the same guys that did Phychonaughts (sp?) so it has a lot of great stuff in it just like that game (btw one of my favorite games ever). Just because of that, though, I was worried it was going to be a little for kids, but it's for grown ups. Which, considering the source material, is a lot better.