Giacomo Gianniotti made his debut as Dr. Andrew DeLuca a guest star in season 11, but was upped to series regular shortly after.
The newest addition to the roster of attractive shirtless doctors is Alex Landi's Dr. Nico Kim. He's also the first openly gay male surgeon character on the series.
Jason George's Ben Warren might be fighting fires on Station 19 now, but back on Grey's he was making us all hot and bothered.
Kevin McKidd gets to helm the drama behind the camera as a director on Grey's Anatomy, and steam up a scene in front of the camera as Dr. Owen Hunt.
Jesse Williams has been making viewers swoon as Dr. Jackson Avery since season six of Grey's.
Justin Chambers has been breaking and healing hearts as Dr. Alex Karev since Grey's Anatomy began in 2005.
Eric Dane had many unforgettable "McSteamy" scenes as Dr. Mark Sloan on the hit ABC drama.
Gaius Charles' Dr. Shane Ross left the hospital for Switzerland, but not without giving us this shirtless gift.
Remember when viewers first met Patrick Dempsey's McDreamy on Grey's Anatomy? Such a (not-so) innocent time. RIP Derek.