Grey's Anatomy co-star and friend Katherine Heigl has referred to T.R. as "the host of Grey's Anatomy." According to Heigl, every time a guest star or new recurring character comes to the show, he knocks on their trailer door, introduces himself, and invites them out to lunch. Heigl says that T.R. did this for her when they first met at the beginning of the series, and they went out together that very first night, so they became good friends.