Thomas Ian Nicholas

Cristina proves to be a difficult patient as she continues to recover; Meredith's mother keeps the hospital staff running in circles; Dr. Shepherd's involvement in the case of a cystic fibrosis patient could delay her departure.

After receiving an electric shock while plugging in the Christmas tree, Al learns what life would be like if he had never been born.

Al gets a visit from a guardian angel and discovers what the Bundy household would look like if he was never born.

Allison helps find a woman who jumped to her death, then learns that the boyfriend is Gregg Watt, a suicide hotline volunteer and son of defense attorney Larry Watt, who previously threatened to expose the medium.