Grey's Anatomy/Trivia

Executive Meddling: There were originally four core interns, but producers felt that another male intern should be added. Enter Alex, who had to be both digitally added the pilot and required new scenes to be filmed. Considering Alex is one of the most beloved characters on the show, it is an example of this trope turning out well.
Hey, It's That Girl!: Before she went to med school, Erica was kidnapped by a serial killer who wanted to turn her into a woman suit??
- Lexie Grey cleaned up nicely. I mean... she used to ... have a ponytail... and... glasses... and... those paint-covered overalls!!!
- And before she was an Insufferable Genius doctor, Cristina was an Insufferable Genius personal assistant to a Small Name Big Ego sports agent...
  - And a Korean Immigrant in the '80s, and a wine expert...
  - And admirably surviving the end of the world in Toronto.
    - Actually she dies.
  - She also dated Addison, seriously. Watch Under the Tuscan Sun.
- Izzie is actually an alien...
  - Who was also named Izzie and in love with another guy named Alex, no less!
- Alex used to be a diabetic detective in Philly.
- And, as it turns out Jesus is just alright with Devo, the Orthodox Jew who gets a cow valve for her failing heart in season 1. Her name is Madeline Zima.
  - That's actually Sarah Hagan. So Devo was a Potential Slayer in a past life.
- Before joining the US army (and I mean a little over 2000 years before) Owen Hunt was a centurion of Caesar's 13th legion.
  - Not to mention if Seattle Grace is ever under werewolf attack, Hunt will save the day!
  - And apparently one of his former army buddies is Audrey Raines.
  - Also, he's Capt. 'Soap' McTavish.
  - And he's the descendant of a tenor that sang for Gilbert and Sullivan
- Lord John Marbury and Zoey Bartlet also show up in consecutive episodes.
- Both of Amy Abbott's best friends from Everwood show up as residents when the merger takes place.
- Meredith used to make out with Chandler. Like, a lot.
- Who knew that Arizona already had a kid, with Booth?
  - And Denny Duquette hunts demons in his spare time.
    - And fights crime.
- Not to mention that Gary Clark was previously in charge of protecting President Bartlet, not shooting people.
  - In addition the Chief was the Mayor of DC on the West Wing.
- April Kepner has come a long way since her days in the Fashion Club...
- Hey, It's Richard Gilmore, Mrs. Kim and Paris Geller!
- Dylan Young is the Identical Grandson of 1930's film star, Bruce Baxter.
- And now Owen is possibly cheating on Cristina with... River Tam?? (Well, okay, we can't blame him for that, but still.)
Names the Same: Mark Sloan shares a name with another TV doctor, Dick Van Dyke's character on Diagnosis Murder.