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? On CBS's "JAG," David James Elliott brought order to the court for ten seasons as military lawyer Harmon "Harm" Rabb, Jr. This season on "Mad Men," we saw him enjoy a power lunch with Don Draper as rival adman Dave Wooster. But that Navy uniform suits him better than a plaid blazer, don't you think? Pete Campbell was loving L.A., thanks to his very blonde real-estate agent/girlfriend Bonnie Whiteside. And you've probably seen those blonde locks on TV before. Jessy Schram, who plays Bonnie, also played Cinderella on "Once Upon a Time," one of the survivors on "Falling Skies," and Scott Speedman's wife on "Last Resort." "Cougar Town" fans must've toasted with their Big Tippi wine glasses when they saw Dan Byrd pop up as Joan's new footwear client. Byrd has played Courteney Cox's son Travis for the past five seasons on "Cougar Town," and like Neve, we wouldn't be surprised to see him back on "Mad Men" later this season. Joan likes wine, right? TV fans remember Hamlin as dashing attorney Michael Kuzak from the '80s legal drama "L.A. Law" — not to mention as People's Sexiest Man Alive of 1987! Even at 62 years old, he's still got plenty of that old charisma as "Mad Men's" Jim Cutler, who's sort of the bizarro Roger Sterling and introduced Don Draper to the subtle pleasures of amphetamine injections. In Season 5, Pete Campbell (Vincent Kartheiser) strayed outside his marriage with troubled housewife Beth Dawes, played by none other than "Gilmore Girls" alum Alexis Bledel. The affair didn't end well — Beth ended up in the loony bin, actually — but the pairing certainly clicked in real life: Kartheiser and Bledel are now married. McGinley has a reputation as a show-killer for appearing on TV series shortly before they get canceled, although he lasted six seasons as Marcy's new husband Jefferson D'Arcy on "Married… With Children." Still, let's hope his show-killer powers are no longer potent, since he popped up last season as Mel, the head writer on Megan's soap opera who tried to rope Don and Megan into a "grass"-fueled foursome. Her "Freaks and Geeks" co-stars may have gone onto greater fame and success, but we've always had a soft spot for Linda Cardellini, who starred as rebellious teen Lindsay Weir on NBC's one-season wonder. We were thrilled, then, to see Cardellini last season as Don's latest mistress, married neighbor Sylvia Rosen. Don and Sylvia's tryst is over, but we still hope we get to see more of Cardellini this season. Wow, Mr. Belding has really let himself go, huh? "Saved By the Bell's" principal, Dennis Haskins, shocked us with his appearance when he guest starred in Season 5 as a test-kitchen scientist in the Cool Whip laboratory. Guess those Bayside High school lunches weren't as healthy as we thought. Plus, he had to stand by awkwardly while Don and Peggy bickered, when we knew he just wanted to say, "Hey hey hey, what is going on here?" Oleynik made magic back in the '90s as telekinetic teen Alex Mack on Nickelodeon's "The Secret World of Alex Mack," and later co-starred with Julia Stiles and Heath Ledger in the 1999 big-screen hit "10 Things I Hate About You." Now she's Ken Cosgrove's better half Cynthia, appearing at Ken's side during work functions and dinner parties. But if they only knew the powers she possesses… We always thought James Wolk deserved a better shot at TV stardom that the measly two weeks his Fox drama "Lone Star" got back in 2010. Now he's lasted a whole season on "Mad Men" as eager young accounts man Bob Benson, who charmed his way into a cushy gig working the Chevy account in Detroit. In real life, Wolk charmed his way into the Robin Williams CBS sitcom, "The Crazy Ones" — which is why we haven't seen much of Bob lately. She was Hollywood's "It" girl for a hot minute in the mid-'90s, thanks to turns in star-studded movies like "Legends of the Fall" (with Brad Pitt) and "Sabrina" (with Harrison Ford). But we like Julia Ormond best as Megan's acid-tongued French-Canadian mother Marie, who hasn't met a bottle of wine she couldn't finish and can't resist making fun of idiots in French. Never change, Marie. Tom Cruise's cousin William Mapother first creeped us out as evil doctor Ethan on "Lost." And he kept the creep factor going when he popped up last season as Roger's insurance pal Randall Walsh, who proposed selling property insurance with an image of a Molotov cocktail and a coupon. Hollywood casting directors, if you need a creepy weirdo, look no further. Panabaker starred in Disney Channel movies as a teen, along with her younger sister Kay, and went on to play a budding superhero in the 2005 film "Sky High." Now she's flying the friendly skies on "Mad Men" as Daisy, the perky stewardess who helped Roger land the Chevy account. Remember this Titan? We know Kip Pardue as quarterback Ronnie "Sunshine" Bass from the Denzel Washington sports movie "Remember the Titans." He also appeared on "ER" and "House" before joining "Mad Men" as Heinz executive Tim Jablonski, who gave Don and the firm a shot at the lucrative Heinz ketchup account. Joan got a much-needed night out on the town when Marley Shelton stopped by as Joan's old friend Kate. Shelton has been acting in TV and movies since she was a teen, but we know her best for her work with director Robert Rodriguez, in 2005's "Sin City" and the "Grindhouse" zombie flick "Planet Terror." O'Connor sure knows how to play a dad. He's been Trudy's father (and Pete's disapproving father-in-law) Tom Vogel on "Mad Men" since Season 1, but we just realized he also played Melissa Joan Hart's dad on Nickelodeon's "Clarissa Explains It All" back in the early '90s. Before she sold us car insurance as Flo the Progressive Lady, Stephanie Courtney answered phones for Sterling Cooper as switchboard operator Marge back in Season 1. She's always all about the customer service, though. Strong was a regular on The WB, playing bullied outcast Jonathan Levinson on "Buffy the Vampire Slayer" and Paris's editor boyfriend Doyle on "Gilmore Girls." He joined "Mad Men" in Season 4 as marginally talented copywriter Danny Siegel, but Strong has also proven to be a very talented screenwriter, penning HBO's recent political docudramas "Recount" and "Game Change." Hey, is that Angela Chase's mom? It is! Bess Armstrong played mother to Claire Danes on ABC's short-lived teen drama "My So-Called Life," and it was a nice surprise to see her in Season 5 of "Mad Men" as Jane's psychiatrist, who famously dosed Roger and Jane with LSD. If the guy playing copywriter underling John Mathis looks familiar, you probably watched a lot of "Frasier." As a child actor, Trevor Einhorn played Frasier and Lilith's son Frederick in eight episodes of the NBC sitcom, and now pitches half-baked ideas to Peggy on "Mad Men." Boy, this guy is just bouncing from one Emmy-winning TV show to the next, isn't he?