When I first visited Albino Blacksheep, I satrted watching the animations in the flash category one by one for completely random crap and I found this:
http://www.albinoblacksheep.com/flash/demented.php
It's made by Brian Kendall, and it's about 30 minutes, but it's so crazy(in my opinion) and random that some people can't help but keep watching. I just kept watching and laughed histarically. And no, it doesn't jump out at you with a negative colored face with a loud scream or anything. It's just, the beginning has a whole bunch of flashing colors in the background, so if your epileptic, I would stay away. The world blows up frequently, and it gets repeatitive in one part, but there is a fast forward button. There are a bunch of random explosions in this flash animation, mostly by a sacred world that will cause a mini neuclear explosion.