Together with some fellow students from The Netherlands we made a simple Flash game called Scroll Wheel Challenge. It's about who can scroll fastest with his mouse. Because of the simplicity of the game and the fact that almost everybody has a scroll wheel everyone can join this epic battle.
The rest of the game can be found on www.scrollwheelchallenge.
P.S. Unfortunately the game doesn't work on Macs due to a technical issue with Flash ActionScript. We hope to solve to problem soon. We hope you will excuse us. :-)