Another post, on topic, reprinted from a different board:
What would you do if had a trillion dollars? - B. Gates
A: Bill, I would invest most of it in space ship designs, ultra fast engines, and state of the art telescopes. Then I'd have my team of astronomers find an exoplanet capable of comfortably supporting human life. Then I'd send my spaceship to the planet, and claim it first; the law for discovery has always been "finders, keepers" for the first white man to plant his flag, so I'd own a whole planet. Then I'd sell 80% interest in the planet to some rich Mormon who wanted to be God of his own planet, for two trillion dollars. Then I'd have my trillion dollars back, and one to party with, too. The 20% of the planet that I still owned would be the only place there where you could get coffee, cigarettes, liquor, and premarital sex, so I would get like, 99% of the tourist money as well.