There's this new game on Steam called
Audiosurf. It costs $10. I would highly recommend it.
Basically all you do is race down a track and collect blocks to try and group them together and you get points. The catch is that you are racing down tracks which are built based on songs. Any song. Any song on your computer or CD. So yes, racing down a track based around the song Blitzkrieg Bop, is awesome.
I can't remember the last time I really enjoyed something as much as this. Go and download it. It's cheap, it's fun and it should run on almost any computer.