There was a recent post on camera tricks for high speed photography/video...
I found some very cool products for really fast speed... 720 x 640 at 12,500 fps!
http://www.photron.com/content.cfm?n=index
There are places you can rent the camera too. (but I lost the link)

here's the youtube link (sorry I had problems embedding it)

http://www.youtube.com/watch?v=1m1BpUIG-sQ