pouët.net

Any X-MIX video

http://www.youtube.com/watch?v=Rp_1QO9LRYw

http://www.dailymotion.com/fr/featured/video/x1xy1v_ge996-by-pistachios
Nice ending.

http://www.youtube.com/watch?v=WLdgntpjRRs
http://www.youtube.com/watch?v=JfhG_tYGhpg

Some really good Lemon Jelly ones from '64 - '95. It's available on DVD, but YouChoob has some rips:

http://www.youtube.com/watch?v=BpKJTogZ16A
http://www.youtube.com/watch?v=6VqSj0lReyE

And "Come Down On Me" would make an awesome visualisation, if only 3D models looked as good as the dancers... No video on the net afaik.

Golden Shower - Total Control
Golden Shower - Video Computer System

http://youtube.com/watch?v=TwQ_BwRTDFs
http://www.vimeo.com/clip:174525
http://www.vimeo.com/clip:150662

Cool :D

http://youtube.com/watch?v=EqjpW-dar2w

Nice commercial for a car.

ASD'ish or Traction'ish. I'm not sure, but sure it's great.

mankind amigaaaaa
http://www.dailymotion.com/videos/relevance/search/m4nkind/1
amigaaa migaaaaa !!!11

Sinus scrolling in a east 17 video clip

Pale blue dot
Not that demo'ish, but ok.ish.

KJ Sawka : Montreal
http://www.youtube.com/watch?v=tWnYf0b0J24

http://youporn.com/watch/31866

Fully textured and bumpmapped spline lofting... I'm impressed.

FUCK THAT'S HUGE!!! Doing that can't be healthy!!!

http://www.motionographer.com/
And check out the links on the left..

Otherwise check www.xplsv.tv and post your demos there :)