I'm In The Middle Of Rewatching "Criminal Minds" And IDK How I Missed All These Famous People

From April Ludgate to deranged serial killer. Whodda thought?

1. Aubrey Plaza as Cat Adams

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Cat, aka the Black Widow Killer, is a psychopathic serial killer and hitwoman who has a keen interest is Dr. Spencer Reid in Seasons 11 and 12.

Where you know Aubrey from: Parks and Recreation, Ingrid Goes West, and Legion.

2. Jennifer Love-Hewitt as SSA Kate Callahan

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Kate is a supervisory special agent who joined the BAU during Season 10.

Where you know Jennifer from: Ghost Whisperer, Party of Five, and 9-1-1.

3. Jane Lynch as Diana Reid

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Diana is the mother of Dr. Reid.

Where you know Jane from: Glee, Two and a Half Men, and The 40-Year-Old Virgin.

4. Cameron Monaghan as Jefferey Charles

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Jeffrey is a child serial killer who appears in the episode "The Boogeyman."

Where you know Cameron from: Shameless, Gotham, and Malcolm in the Middle.

5. Forest Whitaker as Sam Cooper

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Sam is the leader of the BAU's Red Cell team.

Where you know Forest from: Phone Booth, The Butler, and Black Panther.

6. James Van Der Beek as Tobias Hankel

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Tobias is a delusional serial killer who appeared in the episodes "The Big Game" and "Revelations."

Where you know James from: Dawson's Creek, Don't Trust The B**** in Apartment 23, and Varsity Blues.

7. Elle Fanning as Tracy Belle

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Tracy is a victim who Jeffrey (Cameron Monaghan) attempted to kill in "The Boogeyman."

Where you know Elle from: Maleficent, Teen Spirit, and Super 8.

8. Frankie Muniz as Jonny McHale

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Jonny is a vigilante-turned-spree-killer who appeared in the episode "True Night."

Where you know Frankie from: Malcolm in the Middle, Big Fat Liar, and Agent Cody Banks.

9. Jason Alexander as Henry Grace

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Henry was a serial killer who appeared in the episode "Masterpiece."

Where you know him from: Pretty Woman, Seinfeld, and The Grinder.

10. Bellamy Young as Beth Clemmons

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Beth was the love interest of SSA Aaron Hotchner during Seasons 7 and 8.

Where you know Bellamy from: Scandal, Prodigal Son, and A Wrinkle in Time.

11. Gina Torres as Thea Salinas

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Thea is a detective who assisted the BAU in the episode "Normal."

Where you know Gina from: Suits, Firefly, and Riverdale.

12. Michelle Trachtenberg as Diane Turner

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Diane was the stalker and murderer of Dr. Reid's girlfriend who appeared in the episode "Zugzwang."

Where you know Michelle from: Gossip Girl, Ice Princess, and Buffy the Vampire Slayer.

13. Mark Hamill as John Curtis

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John, aka the Replicator, was the infamous copycat serial killer who tormented the BAU throughout Season 8.

Where you know Mark from: Star Wars.

14. Amber Stevens West as Joy Struthers

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Joy is the daughter of SSA David Rossi.

Where you know Joy from: Greek, 22 Jump Street, and Fired Up!

15. Aaron Paul as Mike Zizzo

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Mike was a suspect in the episode "The Popular Kids."

Where you know Aaron from: Breaking Bad, BoJack Horseman, and The Path.

16. Mandy Patinkin as SSA Jason Gideon

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SSA Gideon was the head of the BAU during Seasons 1–3.

Where you know Mandy from: The Princess Bride, Homeland, and Life Itself.

17. Ben Savage as SSA Jason Gideon (flashback)

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Where you know Ben from: Boy Meets World and Girl Meets World.

18. Daryl Sabara as Kevin Rose

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Kevin is a young boy involved in child pornography who appeared in the episode "P911."

Where you know Daryl from: Spy Kids and Weeds.

19. Tony Todd as Eric Miller

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Eric is a suspect of the BAU's who appears in the episode "The Fox."

Where you know Tony from: Final Destination, Candyman, and Chuck.

20. Jackson Rathbone as Adam Jackson

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Adam is a serial rapist and murderer who appears in the episode "Conflicted."

Where you know Jackson from: The Twilight Saga and Finding Carter.

21. Amber Heard as Lila Archer

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Lila was a love interests of Dr. Reid in Season 1.

Where you know Amber from: Never Back Down, Aquaman, and The Danish Girl.

22. Evan Peters as Charlie Hillridge

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Charlie was abducted as a child and forced into being an unwilling accomplice in the episode "Mosley Lane."

Where you know Evan from: American Horror Story, One Tree Hill, and X-Men: Days of Futures Past.

23. Mark Pellegrino as Lieutenant Evans

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Lieutenant Evans is a Phoenix-based cop who assists the BAU with a case.

Where you know Mark from: Supernatural, 13 Reasons Why, and Lost.

24. Tim Curry as Billy Flynn

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Billy, aka the Prince of Darkness, was a serial killer and rapist from Season 5–6.

Where you know Tim from: Rocky Horror Picture Show, It, and The Wild Thornberrys.

25. C. Thomas Howell as George Foyet

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George, aka the Reaper, was a prolific serial killer who terrorized the BAU, but specifically Hotch.

Where you know C. Thomas from: Southland, Red Dawn, and The Outsiders.

26. Finally, Anton Yelchin as Nathan Harris

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Nathan was a suspect who appeared in the episode "Sex, Birth, Death."

Where you know Anton from: Charlie Bartlett, Thoroughbreds, and Star Trek.