1. DEE WALLACE Mildred Baker
Scream queen Wallace (The Stepford Wives, Cujo, E.T.) played the worldly-wise Mildred, who was savvy enough to see right through the Winchesters’ cover (“You two are too cute to be FBI agents”). She helped them defeat the ban- shee haunting her home.
2. RICK SPRINGFIELDVince Vincente/Lucifer
Lucifer entered another vessel in season 12: musician and actor Rick Springfield (“Jessie’s Girl”). Springfield rocked a guitar in his multi-episode arc, parodying himself as a washed-up star reuniting his band Ladyheart. (That’s when we learned Dean is not a fan of ’80s hair metal.)
3. GARY COLE Brad Redding
The Office Space and Veep star shows up on a movie set as the boys look into a murder. The hotshot studio executive is short-lived (death by ghost). But at least one element of the character was grounded in truth: Every note he gives the film’s director is something the CW told the Supernatural makers at some point. (Why are ghosts afraid of salt?)
4. BARRY BOSTWICK Jay
Bostwick (Spin City, The Rocky Horror Picture Show) stars as a has-been magician who suddenly gets his groove back in the season 4 episode “Criss Angel Is a Douchebag.”
5. JULIE BENZLayla Rourke
Benz was the first Buffy veteran to appear on Supernatural. The memorable season 1 episode “Faith” also introduced the monstrous Reapers—and included a pitch-perfect moment featuring Blue Öyster Cult’s “(Don’t Fear) the Reaper.”
6. PARIS HILTONLeshii
It’s been a while since 2005’s House of Wax, but when Hilton reunites with her former costar Padalecki, it’s worth the wait. She’s a Leshii, a shape-shifting god that takes on the form of any object of worship.
7-8. JAMES MARSTER S & CHARISMA CARPENTERDon and Maggie Stark
Buffy alums Marsters and Carpenter share the screen as a married (but feuding) pair of witches. Naturally the boys get stuck in the middle.
9. LINDA BLAIRDetective Diana Ballard
Sam and Dean are rounded up as suspects in a homicide investigation, but the detective on the case, film legend Blair (The Exorcist), begins to think they aren’t actually the killers. When she’s proven right — and the Winchesters save her life — she lets them go. “Did she look familiar to you?” asks Dean. “For some reason I could really go for some pea soup.”
10. MERCEDES McNABLucy
Poor, doomed Lucy. McNab (yet another Buffy actor) riffs on her former role on Joss Whedon’s series, playing a woman who has been unknowingly turned into a vampire.
11. NICOLE 'SNOOKI' POLIZZIDemon
“What’s a Snooki?” asks Sam in season 6. The MTV reality star nonchalantly appears after the boys summon a crossroads demon. Actually, she says, “it’s Nicole now.”
Want More on Supernatural?
Entertainment Weekly’s The Ultimate Guide to Supernatural, celebrating all 12 seasons of the show’s run and a sneak peek at what’s next for the boys in Season 13, is on sale now. Buy it here.