Nazi Zombies gameplay

Some of you may have read various rambling posts going on about Nazi Zombies. Some of you will know what I'm talking about, but for those who don't, let me explain. On Call of Duty World At War there is an unlockable mode which is a zombie survival where you go up against wave upon wave of zombies. You can play this with a friend or go solo. Here is a video I created showing some gameplay footage from the PC version http://uk.video.yahoo.com/watch/6091168/15827704. Please let me know what you think.