I know the Pong category has suffered from long-standing neglect, but I've found a site that moves pong to the next level.
Massively Multiplayer Pong.
You and a bunch of your worldly neighbors join up at this site, and are randomly assigned to one side of the board or the other. Each bit of lava-lampy blob is the cursor position of one of your teammates. The paddle on your side moves to the average of your teammates chosen mouse position. The goal is for your pack of will to outplay the pack of will of your wiley opponent mob. Good luck.
In case you are confused, as neither paddle seems to be bending to your will, you are on this side.
