There has got to be 1000 cool websites out there that we just don't know about. Like the shred show. Stumble finds them.
It is not a search engine, it is a recommendation thing. You click "stumble" and it shows you a cool site based on your profile.
Here's a couple:
http://fun.drno.de/flash/antcity.swf
http://albinoblacksheep.com/flash/dash
One of the new instructors showed me (I think it was Nick Marchant).