Found this site today (well, i was watching Felicia Day's video blog while avoiding study, and she talked about it), and its brilliant! Its based on that game where you pass a page around the room and everyone writes on it to make a story. Like each person writes maybe three lines, but the next person only sees the last bit of it, and continues on with their three lines. This is a website roughly based on that game, using pictures and descriptions. Like it might say 'short history of the world.' The next person draws this, and the person after that writes a description of what the picture is. The next person draws that description, and so on. Its brilliant -- timewasting, but class. Then you log in after a while and see the end result.
Enjoy!
http://drawception.com/
catqueen