Gotta admit that I'm a fan even though I don't have my XBox anymore. I had to play the game with all sorts of cheats on though as I kept getting killed, even on the basic level.
Here's a leaked video (with some strange music to go along with it) that I found flipping through the Recently published list here at wp.com
[youtube=http://www.youtube.com/watch?v=4u_1N_jr188]
edit: For some reason, I just like how the gun waddles as it goes through the level. :)
Yeah, that music is very worrying. Loving the look of Halo 3, hell, I still play Halo 2 to this day.