one of my all time favorites on youtube

Foamy the Squirrel : fear his squirrely wrath!

All Your Base Are Belong To Us : web animation classic

Rathergood : silly music videos - wacky photo animation

Craig's Links to the World Wide Web : comprehensive links to visual art sites

Art Crimes : seminal graffiti art site

Surrealism Server : the most nifty surrealism site from way back