Dave Davies

Jill Tarter works at the SETI Institute, where scientists seek evidence of extraterrestrial lie in the universe by looking for some signatures of its technology. "The amount of searching that we've done in 50 years is equivalent to scooping one 8-ounce glass out of the Earth's ocean," she says.

The actress play smart, tough Secretary of State Elaine Barrish in the new USA Network miniseries Political Animals. It's another strong role for Weaver, who has starred in films like Alien, Ghostbusters and Gorillas in the Mist.