The other night I was looking around for cool/funny music videos and I stumbled upon the work of Chris Cunningham. Chris Cunningham directs a lot of music videos. Chris Cunningham likes to direct supremely ****ed-up music videos. (Mainly for Aphex Twin.) If you haven't already seen these, prepare to be horrified.
"Windowlicker", probably the best of the bunch and one of the most impressively crazy music videos I've ever seen. (Note of warning: intense rump shaking and about a thousand curse words ahead.)
"Come to Daddy", which further cements Aphex Twin's obsession with morphing his face on to everyone and everything.
"Rubber Johnny", which is absolutely nightmare inducing.
Some of Chris Cunningham's other, less scary videos:
Bjork - "All is Full of Love" (This one is actually quite beautiful, in a creepy way.)
Squarepusher - "Come On My Selector"