[s1e1] George — Clooney

: Clooney was the set's resident prankster from day one. In one famous S1 mishap, he accidentally shocked himself with a defibrillator while messing around, much to the amusement of castmates like Noah Wyle and Julianna Margulies.

The Night That Changed Everything: Revisiting George Clooney in the ER Premiere

: Though he left the show in Season 5, Clooney and Margulies still sign their personal emails to each other as "Doug" and "Carol" to this day. Why It Still Matters

While "24 Hours" is often cited as Clooney’s big break, it actually wasn’t his first time playing a doctor on a show called ER . A decade earlier, he starred in a short-lived CBS sitcom titled E/R . However, it was the 1994 NBC drama that truly stuck.

Thirty years ago, a relatively unknown actor with a history of short-lived sitcoms walked onto a chaotic hospital set in Chicago and changed the course of television history. Before he was an Oscar winner or a silver-fox icon, George Clooney was Dr. Doug Ross, the charismatic, rule-breaking pediatrician who made his debut in the landmark pilot episode of , titled " 24 Hours ". A Star is Born (Again)