"Sometimes a Fantasy" is the third episode of the third season of the American television medical dramaGrey's Anatomy, and the show's 39th episode overall. It premiered on October 5, 2006. Written by co-producer and writer Debora Cahn and directed by filmmaker Adam Arkin, the episode was viewed by 22.80 million Americans. Writing for Television Without Pity, Lauren Shepard had mixed perspectives on the episode, elaborating, "It's one of those episodes with a dozen plots. A week has gone by since Callie came over to the house, and George is getting a little sick of having her around. But he's too much of a wimp to tell her he's not interested in living together -- that is, until they have a fight about a patient who keeps getting unnecessary surgeries, and all of the living-together angst explodes all over them." The patient is eventually diagnosed with CIPA, a nervous system disorder preventing the perception of pain.