For a Runner in You: QWOP, the running game! Try at your own peril.

From Canadian Running Magazine website:

If you think actual running is tough, you need to try this online running game called Qwop. The goal is simple: control the legs of a track runner named Qwop as he attempts to spring 100 metres. The catch: your only controls are the four keyboard keys, Q, W, O and P, each moving different calf and thigh muscles. The results are as frustrating as they are hilarious. Let us know how far you get.
TRY THE GAME HERE

Here's the video of the game: