New coding contest

We haven't had one in a while so let's have a new coding contest. I'm open to suggestions for the challenge, but if we don't have any good suggestions we will default to something stupid like "implement cowsay in erlang shitty language X".

>>24
So pong, but instead of a ball you have a tetromino (or however the fuck that's spelt), and each time it hits off a bat, the previous number is added to the mix?