This is a Halo 3 montage from Spudmonkey, edited by himself, entitled, "Collapse the Box". The gameplay is fantastic, featuring a bunch of fresh Salaya-esque stuff with a heavy focus on trick jumping (see, you CAN do this stuff in matchmaking). The editing is great too, showcasing the necessary smooth theater work to accompany trick jumping footage, and I always like it when players edit their own footage since not many people seem to do that nowadays. I also thought the title was really sweet. Enjoy!
Collapse the Box - A Halo 3 Montage