Cool things to do with your computer and Linux

[Off]

Anyone know of anything cool to do with old computers and Linux? My friend made an MP3 player with his and put it in his car. He used a custom made program that loaded on boot (no xwindows) that he controlled with a remote num pad.

He had a CD player in his car though so it was kind of pointless - he could of just burned the songs....

[Jordan]

Hmm, I haven't heard of anything that neat but here are some things I've seen done with Linux and an old Machine:

1) Hooked up to TV and used as a media server.
2) Hooked up to stereo and used as a MP3 Player.
3) Used for a NAS

[Valor]

I've seen a couple of NAS's made from old Linux Machines. Runs great. I've also seen a movie server (connected to a TV), controller for X10, and many web servers running on old machines.