One PC, Six Hard Drives, 37 OSes
"This project started with a simple dual boot between Windows 98 and 2000. Then I added some Linux distributions and BeOS. Somewhere along the line, adding operating systems became an obsession. I wanted to see exactly how many I could stuff in one box. It also became a project to prove people wrong. Many people told me that what I achieved could not be done." Read the original article at TechTV and the interview with the OS geek, Richard Robbins, at MaximumPC.