This video is a little old, but it is still very cool. Peter Green hacked himself up the smallest Mac portable out there: an 8 inch screen combined with a battery, scroll pad and a G4 Mac mini = an ugly, but very portable, Mac.
Check out all the details at his .Mac page, and it looks like Peter is going to be hacking an Intel version sooner or later. Here's to the crazy ones.
[via Gizmodo, though they only have one pic]