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.