I discovered this while messing with Joost (here's a direct link to the video). Wow, is it funny. It's hard to describe how insane this animation is... but it's great. I mean, it's got hyper-excessive violence, but it's draw-droppingly humorous and filled with an incredible amount of detail. Every time I watch it I see something new (like the leaking nuclear power plants in the background, or burning forests). The take on Anime is just perfect... ever catch some imported series on TV late at night (like Bleach, for example) and wonder WTF the animators are smoking? Then you'll find this highly amusing.
The Purple Ninjas just crack me up. There's one scene where this one stands up and says "For Roger!!" that just kills me.