This guy built a computer from scratch. I'm not talking about purchasing parts from Newegg and putting it together. He actually built the parts:
Homebrew PC features 2MHz hand-wrapped CPU
http://www.stevechamberlin.com/cpu/category/bmow1/
Homebrew PC features 2MHz hand-wrapped CPU
http://www.stevechamberlin.com/cpu/category/bmow1/