Cristina is awarded the first solo surgery among the residents, but she has to relinquish it and choose her replacement; Mark performs a cutting-edge procedure to restore a patient's speech, impressing Lexie in the process; and Callie can't figure out if Sadie (Melissa George) is flirting with her or just being friendly.

Earl helps his old friend Raynard who lives in the wild.

After fallout from Randy's departure pits two allies against one another, one castaway makes a lifetime commitment in a surprisingly intimate gesture.

Amanda and Betty are forced to work together for an article called "How I Blew Ten Grand Without Spending a Dime."

The stress from wedding planning is taking its toll on Kath and giving her insomnia. Phil suggests that Kath visit his life coach and spiritual adviser Athena Scooberman (guest star Maya Rudolph). Kath agrees and is quickly taken with Athena and her teachings, but Phil soon realizes that his advice may have been a big mistake. Meanwhile, Kim must pay her outstanding parking tickets in order to get a boot removed from her car. Instead of paying the price, she asks Craig to help her get out of the bind no matter the cost.

A plummeting actor is found dead in his home with a broken wine bottle shoved in the back of his head.

With a $4,300 surplus to spend, the workers fight amongst themselves in order to get what they want. Andy and Angela go to Schrute Farms to work on wedding plans.

After the fall of the Roman Empire, Europe was plunged into chaos for centuries, with vicious carnage and rampant disease regularly raging through the streets. However, below the streets was another world designed to keep the people alive and the enemy guessing

Liz is forced to take Jack to her high school reunion. Don Geiss awakens from his coma and makes his choice for the new GE CEO.

Neela must testify in court and defend her actions regarding a patient who died. Sarah and Alex defy Sam and sneak off to a party, with dire consequences. A snowstorm strands Banfield and Morris at a Nebraska medical conference.

At a college in Oklahoma two students unexplainably die of "the bends" even though they hadn't been in the water.

Brian and Sarah set out to coin the next big word, in hopes it will become part of society's slang terms.

Ron and Peter test out new chastity belts that emit an electrical charge when they get erections, after getting control of their erections and days left to go with the experiment they both meet women out of their league, so they must find a way to get the chastity belts off.

Ron takes care of Peter after he is paralyzed by testing out a new muscle relaxant; Nugget sets up an art gallery show, for a painting he found in the dumpster and then says a quadriplegic Peter painted them.

Director Ron Howard talks about his new movie Frost/Nixon

Tonight Stephen welcomes Harvard history professor and author of The Ascent of Money: A Financial History of the World, Niall Ferguson.

When a sexual harrassment case ends wrongly - Roy turns to the streets, Moss gets a bump on the head, and Jen is looking for something new to do.

The popular news quiz returns, with team captains Paul Merton and Ian Hislop, guest host David Mitchell, and guest panellists Andy Hamilton and Sarah Millican.