The halls of Sterling Cooper & Partners have been filled with a lot of familiar faces lately. Here are more than 20 "Mad Men" guest stars we recognize from previous roles in TV and movies. — Dave Nemetz, Yahoo! TV
Last season, we saw Don have an affair with Linda Cardellini from "Freaks and Geeks." This season, he was nearly seduced by another '90s teen star: Neve Campbell, of "Party of Five" and "Scream" fame. She played a fellow passenger on Don's flight who tried to talk him into joining the mile-high club, but he refused. They both landed in New York, though; maybe there's a return flight in their future?