Trending badgeTrendingPosted 1 hour agoSubscribe to Screen Time NewsletterCaret DownPhotos Of The Cast Of "ER" Then Vs. Now Is Truly A Pop Culture Time CapsuleThe doctors are back in.by Michele BirdBuzzFeed ContributorFacebookPinterestLink It's hard to believe, but it's been over 30 years since ER first debuted. And with 331 episodes during the show's run from 1994-2009, there have been A LOT of cast members over the years. (C) NBC / Courtesy Everett Collection Let's take a walk down memory lane and revisit your favorite characters then vs. now: 1. To start, here's George Clooney as Doug Ross: (C) NBC / Courtesy Everett Collection And here's George Clooney now: Frazer Harrison / Getty Images 2. Here's Anthony Edwards as Mark Greene: Jeff Katz / TV Guide / (C) NBC / Courtesy Everett Collection And here's Anthony Edwards now: ROBYN BECK / AFP via Getty Images 3. Here's Noah Wyle as John Carter: (C) NBC / Courtesy Everett Collection And here's Noah Wyle now: Michael Buckner / Variety via Getty Images 4. Here's Eriq La Salle as Peter Benton: Chris Haston / TV Guide / (C) NBC / Courtesy Everett Collection And here's Eriq La Salle now: Araya Doheny / Getty Images 5. Here's Julianna Margulies as Carol Hathaway: Chris Haston / TV Guide / (C) NBC / Courtesy Everett Collection And here's Julianna Margulies now: Taylor Hill / Getty Images 6. Here's Gloria Reuben as Jeanie Boulet: (C) NBC / Courtesy Everett Collection And here's Gloria Reuben now: Michael Loccisano / WireImage / Getty Images 7. Here's Laura Innes as Kerry Weaver: Chris Haston / (C) NBC / Courtesy Everett Collection And here's Laura Innes now: Bruce Glikas / Getty Images 8. Here's Maria Bello as Anna Del Amico: Sven Armstein / TV Guide / (C) NBC / Courtesy Everett Collection And here's Maria Bello now: Robert Smith / Patrick McMullan via Getty Images 9. Here's Alex Kingston as Elizabeth Corday: (C) NBC / Courtesy Everett Collection And here's Alex Kingston now: Gerardo Mora / Getty Images 10. Here's Kellie Martin as Lucy Knight: (C) NBC / Courtesy of Everett Collection And here's Kellie Martin now: Rodin Eckenroth / Getty Images 11. Here's Paul McCrane as Robert Romano: (C) NBC / Courtesy Everett Collection And here's Paul McCrane now: Cbs Photo Archive / Getty Images 12. Here's Goran Višnjić as Luka Kovač: (C) NBC / Courtesy Everett Collection And here's Goran Višnjić now: Ethan Miller / Getty Images for Cirque du Soleil 13. Here's Michael Michele as Cleo Finch: (C) NBC / Courtesy Everett Collection And here's Michael Michele now: Arturo Holmes / Getty Images 14. Here's Erik Palladino as Dave Malucci: (C) NBC / Courtesy Everett Collection And here's Erik Palladino now: Paul Archuleta / Getty Images 15. Here's Ming-Na Wen as Jing-Mei Chen: (C) NBC / Courtesy Everett Collection And here's Ming-Na Wen now: Craig T Fruchtman / FilmMagic / Getty Images 16. Here's Maura Tierney as Abby Lockhart: (C) NBC / Courtesy Everett Collection And here's Maura Tierney now: Jason Mendez / Getty Images 17. Here's Sharif Atkins as Michael Gallant: (C) NBC / Courtesy Everett Collection And here's Sharif Atkins now: Karen Neal / CBS via Getty Images 18. Here's Parminder Nagra as Neela Rasgotra: Justin Lubin / (C) NBC / Courtesy Everett Collection And here's Parminder Nagra now: Rodin Eckenroth / Getty Images 19. Here's Linda Cardellini as Samantha Taggart: (C) NBC / Courtesy Everett Collection And here's Linda Cardellini now: Jamie Mccarthy / Getty Images 20. Here's Scott Grimes as Archie Morris: (C) NBC / Courtesy Everett Collection And here's Scott Grimes now: Kevin Winter / Getty Images 21. Here's David Lyons as Simon Brenner: Chris Haston / (C) NBC / Courtesy Everett Collection And here's David Lyons now: Amanda Edwards / WireImage / Getty Images 22. Here's Mekhi Phifer as Gregory Pratt: (C) NBC / Courtesy Everett Collection And here's Mekhi Phifer now: Frazer Harrison / Getty Images 23. Here's William H. Macy as David Morgenstern: (C) NBC / Courtesy Everett Collection And here's William H. Macy now: Monica Schipper / Getty Images 24. Here's Angela Bassett as Catherine Banfield: Paul Drinkwater / (C) NBC / Courtesy Everett Collection And here's Angela Bassett now: Maya Dehlin Spach / WireImage / Getty Images 25. Here's Shane West as Ray Barnett: (C) NBC Universal / Courtesy Everett Collection And here's Shane West now: Michael Tullberg / Getty Images 26. Finally, here's John Stamos as Tony Gates: Michael Yarish / (C) NBC / Courtesy Everett Collection And here's John Stamos now: Monica Schipper / GA / The Hollywood Reporter via Getty Images Stream ER on HBO Max. Who's your favorite ER character? Drop your pick in the comments!