The first time I heard about www.stumbleupon.com was through my daughter who sent me pics of a "Hobbit House" in Wales. Since then I have been on it constantly. What you do is select items that interest you (ie: sports - skydiving) and then you click on "stumble" and it boots around the web and shows you the coolest stuff. You really have to try it in order to appreciate it. This is one of the pages from the motorcycle section, a real cool 1930 Henderson.
http://www.stumbleupon.com/su/2RL9qW/www.bikeexif.com/art-deco-custom-motorcycle