Steve Ballmer

If you look at companies with upside potential, Twitter's right there. They've established a brand in a world where it's extremely difficult to establish a brand. It's a global brand, people recognize it, people want to let you know what their Twitter handles are, etc.

I'm very, very bullish about our prospects, and as I tell our board, as I tell our employees, this is the time to invest. There's so much opportunity. Let's just invest in that opportunity, and really get after it.

I found during my time covering the NHL that the enforcers were some of the most accessible guys and the most low-key guys. I think that's somewhat of a natural thing. I don't know if that's because it's the big guy that everybody fears, and then you're sort of surprised and taken by the fact that he's actually a nice guy.