I prefer Olympian detachment in my tycoons. Mark Cuban — the buccaneering entrepreneur who flipped Broadcast.com to Yahoo — has an uninhibited blog. And the Dallas billionaire, owner of the Mavericks basketball team and patron saint of Jason Calacanis, also recently went through his first colonoscopy. It's not a pleasant combination.

No where else can you rip off some huge farts and have 3 nurses and a doctor, while maintaining a very professional demeanor, tell you that you aren't done yet and demand that you let loose a few more. [My Colonoscopy, by Mark Cuban]