Alex Ball

In the first part of the one-hour seventh season premiere, Sheldon and Penny bond in Leonard's absence, but it's Sheldon's feelings that are crushed when Leonard returns from the North Sea. Guest star Regina King returns as Mrs. Davis, the University's Director of Employee Relations.

Love is in the air when Amy convinces Sheldon to join her (as well as Howard and Bernadette) for a romantic weekend in Napa Valley to celebrate Valentine's Day. Meanwhile, Leonard and Penny must rush Raj's dog to the vet.

Rachel nearly gags on her meal when she secretly meets at a restaurant for a job interview and sits right next to the table where her current boss is dining. Phoebe considers legally changing her married name to something more exotic. Meanwhile, Joey feels abandoned when Monica and Chandler try to buy a house, but Joey finds solace with the sellers' precocious 8-year-old daughter, Mackenzie (Dakota Fanning - "The Cat In the Hat").

Hitchcock and Scully force their way onto one of Jake's biggest cases to prove themselves.

Ray seeks help to take Cochran down; Mickey wants to have a big payday.