Grey's Anatomy Scoop: St. Elsewhere's William Daniels Scrubs In as Cristina's [Spoiler]

William Daniels Grey's AnatomyWilliam Daniels, a winner of two Emmy Awards during his run as St. Elsewhere‘s Dr. Mark Craig, is playing doctor again — in a potentially pivotal episode of Grey’s Anatomy.

In one of the ABC drama’s final episodes of the season, Daniels will play one of the doctors overseeing the medical boards being taken by the Seattle Grace residents.

“it’s actually really hilarious!” Sandra Oh told TVLine of the episode, which was directed by her scene partner Kevin McKidd. “I just shot the entire boards episode with the wonderful William Daniels, who played Cristina’s proctor. It was phenomenal to be working opposite him.”

In addition to St. Elsewhere, Daniels’ TV credits include Boy Meets World and the voice of Knight Rider‘s K.I.T.T. His big screen resume includes the role of Dustin Hoffman’s father in The Graduate.

Grey’s Anatomy returns with fresh episodes this Thursday at 9/8c. (With reporting by Vlada Gelman)