Nate Berkus

I have a large watch collection, and classic watches are especially important to me. I had a silver Rolex, and I actually gave it to my little brother. He wears it every day. He's an actor, so whenever he goes to an audition, he can look down, see it, and it gives him confidence. It was a great thing to pass on.

You don't have to paint your walls lime green just to try to have your home feel decorated. If you're a classic dresser or preppy dresser or a modern dresser, you wear a lot of black - whatever it is - your home should reflect that as well.

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.