How Hector Hammond channeled Carl Sagan to become Green Lantern's evil…

After the flashy Green Lantern footage was premiered we sat down with cast and crew to talk about the ring-slinging space corps. But we were most surprised to learn Peter Sarsgaard's inspiration for his mustachioed character. Spoilers ahead... » 7/24/10 4:56pm 7/24/10 4:56pm