Haloid

Description from Kotaku

I'm not sure if this is the coolest thing I've ever seen or the saddest. On the one hand, it has two of the biggest video game badass characters ever, first fighting against each other and then teaming up against a common foe. It's got a lightsaber dual, short-circuiting crotches, Matrix references, suggestive girl on girl action, and even a dance number.

All those things are great, but all mashed together along with fighting moves out of a wire-fu martial arts film makes the whole thing feel like a fanfic threw up on camera. Great dance number though.