We end our journey into the world of Open Source Bad Boys with someone... a little different. Steve Ballmer, the current head of Microsoft (for a bit longer, at any rate). Yes, Microsoft does open source, on occasion. And, let's be honest, in terms of "Open Source," who would be a bigger "Bad Boy" than Ballmer? I leave you with two choice quotes.
"Linux is a cancer that attaches itself in an intellectual property sense to everything it touches. That's the way that the license works."
"I would love to see all open-source innovation happen on top of Windows."