I think I've seen that one before, sick video though! I saw Obituary on their reunion tour with Napalm Death last year and they put on a damn good show; nothing like that video though!
I'll never get over their singer, that guy's screams are insane and it's almost impossible to tell if he's singing actual words or not; it's all just a bunch of "YEEEEUUUUURRRRRGGGGGHHHHHH - EEEVOUGH EE RAAAEEEEYYYY BLEEEEAAAYYYYRRRRGHHHHH!!!!"