The O.C. - Season 4, Episode 8 - "The Earth Girls Are Easy". Core Four 2.0 takes a road trip to Vegas to ring in the New Year, but they're in store for an out-of-this-world adventure before they get there. Pregnancy scares, alien costumes, and raves continue the trend of season 4 being the most ridiculous season. Oh, also Kevin Sorbo is here.