The two tribes each search for a Hidden Immunity Idol within their respective camps. Meanwhile, Coach believes everyone is against him, and the Villains get frustrated with Russell.

Four more semifinalists - two girls and two boys - will be eliminated from the competition and sent home tonight after America's vote is revealed. Tune in to see if your favorites make the cut.

Jeff is excited to show off his pool skills in his new billiards class, only to have his will tested when shorts, not designer jeans, are the required uniform to play. Meanwhile, the gang focuses on helping Abed woo a potential mate by bringing out different sides of his personality.

Leslie is outraged when Ron wins a "Woman of the Year" award for a project she started. Meanwhile, Tom is desperate to find some money to invest in a local Pawnee club.

When a band member of Rascal Flatts is electrocuted by his own guitar during a concert, the CSI team investigates if it was a case of foul play.

When famous surgeon Dr. Harper Avery is rushed to Seattle Grace-Mercy West, the staff is surprised to discover that one of their own is related to this legend, and his unorthodox request for his surgery causes tensions t between Derek and Richard. Meanwhile Callie and Arizona try to help Teddy and Sloan move on from their pasts and find greener pastures.

Pam's contractions begin but she and Jim are determined to wait it out as long as possible so they can have more time at the hospital. Meanwhile the rest of the office tries to distract Pam from the pain with food and entertainment. In the second half hour, Michael anxiously waits for Pam and Jim's baby to be born. Back at the office, Erin makes Andy jealous when she has lunch with Kevin.

Michael is approached by his alter ego - the man who actually committed the crimes that were used to burn him.

Chef Ramsay visits Lido Di Manhattan Beach in Manhattan Beach, CA. Lisa Hemmat grew up in and around the food service industry and inherited the entrepreneurial spirit from her parents. Shortly after graduating with a business degree from USC Marshall School of Business, she secured a loan (with her parents as co-signers) and purchased Lido Di Manhattan in June of 2004, at the ripe old age of 23. Having been left with a strong staff, including a veteran cook in the kitchen, Lisa felt secure and confident in her decision to become the next great Los Angeles restaurateur. Five years later, Lisa is struggling to pay her bills and has come to the harsh realization that she is barely making ends meet. Chef Ramsay gives Lisa a lesson in restaurant business 101.

Halfway through the competition the designers get the task to create an unconventional, innovative look and an accessory from materials from a hardware store. The limited budget makes a contender to resize his design.

Pam's contractions begin but she and Jim are determined to wait it out as long as possible so they can have more time at the hospital. Meanwhile the rest of the office tries to distract Pam from the pain with food and entertainment. In the second half hour, Michael anxiously waits for Pam and Jim's baby to be born. Back at the office, Erin makes Andy jealous when she has lunch with Kevin.

Things get too close for comfort when Addison, Pete and Sam must come together on a complicated case involving a dad-to-be who comes down with tuberculosis and threatens the future of his new family. Meanwhile, with Violet still gone on her Costa Rican escape, Sheldon takes over helping one of her patients, Natasha, to get over her crippling fear of flying, and Naomi finds herself in a bit of a love triangle of her own.

Jane and the team investigate the murder of an arrogant chef during a cooking competition in Napa Valley.

ISIS loses yet another contract to ODIN, so Malory assigns Archer and Lana to steal a priceless diamond from ODIN's biggest client in order to embarrass the rival spy agency.

Guest: Author talks about his new book The Unforgiving Minute: A Soldier's Education.

Barry Schwartz

Actor Tom Hanks.

Matthew McConaughey; Brett Favre; musical performance by Lifehouse.

The panelists on this episode are Jimmy Carr, Jack Dee and Sue Perkins.

The first lady of pop madness, Lady GaGa return to perform and chat. Her 'chat' during her last appearance was monosyllabic - hopefully she's a little more verbose this time. Stephen Moyer, star of True Blood joins Jonathan to tell him why vampires are the new black.