"Grey's Anatomy I knew was something special," Morgan said on The Hot Ones. "That's the one time that I saw my death coming and was trying anything I could to get out of that death," he explained. "That character Denny and that love story with Izzie took the world by storm. I knew how f*cking lucky I was to be there and I was like, 'Please don't kill me.' I did, I begged (Shonda Rhimes). That's what changed my life. Being Denny, where I never got out of bed, is why Zack Snyder hired me to be The Comedian. That's how special that was." ALSO: Chyler Leigh wasn't the only past Grey's fan favorite to return for Thursday's episode.