Dan Desmond

Disappointed to learn that they cannot conceive a baby naturally, Monica and Chandler mull their options. When Chandler brings home a handsome, unknowing co-worker, Zack (John Stamos - "Full House," "Thieves"), for dinner, Monica and Chandler embarrassingly "interview" him as a potential sperm donor. Meanwhile, while shopping with Phoebe, Rachel confides that she is enamored with Joey. Unfortunately, Joey's current girlfriend, Charlie (recurring guest star Aisha Tyler), overhears. And Phoebe encounters a boyfriend, David (recurring guest star Hank Azaria), from long ago.

Family business -- Michael (Golden Globe winner Steve Carell) and Dwight (Rainn Wilson) go undercover to do a bit of industrial espionage on a paper company competitor. Meanwhile, the rest of the office holds a debate to settle the question: is Hilary Swank hot? John Krasinski, Jenna Fischer, Leslie David Baker, Phyllis Smith, Angela Kinsey, Ed Helms, Kate Flannery, Brian Baumgartner, Creed Bratton and Craig Robinson also star.

In Part Two of the two-part season finale, House remains inhibited by injuries sustained from a bus accident that has also left a victim rapidly deteriorating from a mysterious condition. Clues inside House's head hold the key to a patient's condition, and House's friendship with Wilson is tested beyond limits as murky memories from the bus accident the night before threaten to change their lives forever.

The family travels to Las Vegas when Hal experiences a dream about hitting the jackpot; Dewey and Reese enter an enormously obese rabbit in a contest; Lois gets to meet her favorite singer backstage; Otto and Francis get trapped in a well.

Sabrina's 17th birthday turns stressful when she has to start studying for her witch's license.