Reminds of the "exuberance" animations (feat. Colin Mochre!)
Sorry, I really can't "describe" this, you just have to sit back, focus on the screen, and enjoy...
http://www.youtube.com/watch?v=J02JYDQgykM
(The opening titles seem to mention 4chan, so that gives you a hint of its "style" I guess)
I think my favorite bit is @ 3min 20sec -- totally unexpected!
-1 MASHUP