Sheldon and Penny commiserate over their mutual sadness of Leonard's absence. Howard encourages Raj to start looking for another girlfriend and is surprised at who he chooses. Amy & Bernadette are away at a conference and bond/clash when they talk about their relationships.

Leslie wins an award from an international Women in Government organization, and travels to London with Ben, Andy, April, and Ron to accept it. Tom hunts down the mysterious businessman who is trying to put Rent-a-Swag out of business, while Ann and Chris settle into the next phase of their relationship.

The auditions filmed in front of a live audience come to an end tonight on THE X FACTOR. Tune in as judges Simon Cowell, Demi Lovato, Kelly Rowland and Paulina Rubio, and host Mario Lopez, conclude their nationwide search to find talent 12 years old or over - both solo artists and vocal groups - that will bring them to their feet.

Leonard arrives home early and chooses not to tell Sheldon. Howard's unusual behavior results from an unlikely source.

Leslie wins an award from an international Women in Government organization, and travels to London with Ben, Andy, April, and Ron to accept it. Tom hunts down the mysterious businessman who is trying to put Rent-a-Swag out of business, while Ann and Chris settle into the next phase of their relationship.

Simon is under the gun to get a "name" to re-record the jingle for the remake of their best client's classic commercial or risk losing them.

After he is diagnosed with Parkinson's, NYC anchorman Mike Henry put his life on hold for five years. But now he is getting restless. All his old boss Harris Green has to do is get him to come back and convince Mike that it was his idea all along. To succeed, Harris teams up with Mike's family, who are eager to get him out of the house.

The Grey Sloan Memorial Hospital doctors are faced with the devastation left by the storm. A giant mudslide in Seattle injures a group of first responders and citizens, causing the already short handed ER to spring into action. Meanwhile, Meredith is faced with a tough decision that will affect the life of a loved one, Callie is rocked by the reality of Arizona's infidelity, and Richard's life is in extreme danger.

The members of New Directions are back in action and take on their biggest assignment yet: the Beatles! As Will enlists the kids to pay homage to the classic song catalog from the Fab Four, Blaine and Kurt attempt to answer questions about their future together. Meanwhile, Rachel's New York ambitions take an unexpected turn.

Young, innovative folks inspire the designers. Guest judge: Peter Som.

Mike tries to deal with an attractive yet noisy upstairs neighbor, who develops a crush on him. Meanwhile, Ian tries to court Eve's new friend at school, and Leigh enjoys being mistaken for a single mom and decides to take advantage of it.

Alan is shocked when Charlie's 25-year-old daughter shows up at Walden's beach house to connect with what's left of her family, and who happens to like everything her dad liked - including women.

Charlie competes with Nolan for the crazy hot grad student that's observing his group. Meanwhile, Martin and Ed come up with a patriotic scam.

The staff continue to assist those affected by the storm. Meanwhile, Callie makes a bold decision regarding her relationship with Arizona, and tragic news brings the doctors together.

The Braverman family gathers for Jasmine and Crosby's unnamed newborn. Kristina and Adam adapt to life after her cancer ordeal , while Hank moves back to town and, unknown to Sarah, gets back together with Amber.

Sherlock is called to London to revisit an old case, where he is forced to face his older brother, Mycroft. Although the siblings suffered a drastic falling-out a few years earlier, Mycroft allows Sherlock and Joan to stay in his new home, 221B Baker Street. With Joan in the middle, the brothers are forced to confront their very complicated history.

Robin Williams

Andy Samberg, Slash

Chris Fischer

Johnny Galecki, Stupid Human Tricks, Kings of Leon

Julia Louis-Dreyfus, Ron Paul, Little Big Town

All the world's superheroes are rendered powerless, except The Awesomes. Can Prock and his team figure out how to stop Malocchio before it's too late?

When Alphonse is captured in an assassination plot, the team joins forces with their British counterparts in a special double-episode movie event. Shot on-location in London.

Joseph Gordon-Levitt, Maggie Grace

After a gang leader is discovered dead outside a travelling boxing tent, Phryne's investigation finds her entering dangerous but thrilling world of fight rigging and tribal payback.

Six of the celebrity couples take to the dance floor for the first time. After each of the couples have performed the judges give their verdicts on what thy have seen and give their scores.

Coming Soon...

Stephen Fry looks into knits, knots and other things starting with K, with Sue Perkins, Ross Noble, David Mitchell and Alan Davies.

In an attempt to get Judge Hotah to release Tonraq, Korra discovers that Unalaq had set up the trial and his brother's banishment, causing her to break away from him and his teachings. Meanwhile at the Southern Air Temple, Tenzin finds Ikki and they reconcile with their respective siblings.