Right on, man...

Acid/Shroom Flashback
YouTube - Acid and Shrooms Flashback

Brain control Monkey
YouTube - Brain control-Monkey

THIS WILL MAKE YOU SHIT YOURSELF
YouTube - The Poughkeepsie Tapes

Creepy Mark Twain Cartoon
YouTube - very creepy, disturbing children's cartoon, banned from TV

Fantastic Planet
YouTube - Fantastic Planet part 1 (english)

I dunno how to describe this one
YouTube - Fantoche (2 times)

Adventure Time from Nickelodeon
YouTube - Adventure Time

The Bjork Stalker Footage
YouTube - Bjork Stalker

Old Man Tyree. He's just funny as shit.
http://www.youtube.com/watch?v=RJ2n5-razCE

The Barbershop. It's just audio but USE HEADPHONES FOR THE FULL EFFECT.
YouTube - Virtual Barber Shop (Audio...use headphones)

Gay ...... from Outer Space
YouTube - Gayniggers from Outer Space (1 of 3)

Hello Elohim. Trippy as fucking fuck.
YouTube - Hello Elohim Video Organism : fractals, shamanic dance....

Mentally Disturbing
http://www.youtube.com/watch?v=lcxGW5CT-Qo

No Fucking Clue
YouTube - Weird Video I Found

More weird shit
YouTube - Video Tape a #1

1.21 Gigawatts!!!! FUNNY AS FUCK!
YouTube - 1.21 GIGAWATTS (REDUX)

That's all I got, folks