I bought a graphite clamshell (466 MHz with 312MB of RAM, DVD, Firewire) off eBay two weeks ago for $120 (shipping included). I bought it solely for its unique shape/design. I put it on the floor in my living room as decoration only - with the shell half open and standing on the open shell, so the big apple logo is right in your face. it looks really cool.

I use VNC remotely control it to have it play internet radio at times. Even though it has a mono speaker, it actually is every acceptable to my ears.

It doesn't look like a computer, and that's why I wanted it.