Besides the usual Pink Floyd Dark Side of the Moon -Wizard of Oz, Mudvayne L.D. 50 -2001: A Space Odyssey, I have seen that Tool Ænima synchs up Taxi Driver and The Matrix...

But definitely try AKIRA + Ride the Lightning

Here are some sites that have some cool synchs:
The Synching Ship
Top 10 Synch Sites

hmm.. i never did that, i prefer listening to the soundtrack and the dialogue etc. but i wanted to do something with a couple of Dragon Ball Z episodes: to be more specific, make an AMV for the Cell battle with Tenacious D- Beelzeeboss in the background, it's simply perfect!

...i know it sounds really weird but i'd love to see the little mermaid with a combination of: necrophagist / quo vadis / cynic / martyr / death / pitbulls in the nursery...