Man in Black (sort of)
Just when I thought the search for intelligent life couldn't get any cooler, I learned that NASA has a Planetary Protection Officer. This guy's job. . . he getspaid for this, is to protect our planet against hostile aliens!
Actually, the "aliens" in question would most likely be bacteria or other single-celled extremophiles, and his "protection" refers to sterilization and biological containment guildelines.
But it's still cool.