Marge fantasizes about being a contestant on “Top Chef” hosted by Tom Colicchio (guest voicing as himself)meanwhile Homer befriends Wayne (guest voice Kiefer Sutherland, R), a reserved security guard recently hired by the nuclear power plant.

Watch it >>

Watch it >>

Nathan and Haley struggle with the aftermath of her mother’s death, while Brooke deals with the fallout of Alexander’s tryst with Victoria. Alex discovers a secret about her leading man, Josh, that could derail Julian’s film, and Clay is confronted by an unhinged Katie.

Watch it >>

When Ted and Barney jeopardize Robin’s new relationship by professing their love for her, Robin realizes that she is finally over them. Meanwhile, after spending a weekend sleeping in twin beds, Marshall and Lily decide to get twin beds at home.

Watch it >>

Sarah and Chuck train under Laura and Craig Turner (Swoosie Kurtz and Fred Willard), a married CIA team with an impeccable record but stormy relationship; Casey trains Morgan.

Watch it >>

Kat follows Patrick around when he starts acting strangely; Bianca believes Joey has an eating disorder and stages an intervention.

Watch it >>

With only five hours left, the clock races toward the climactic series finale as Jack stops at absolutely nothing to avenge the emotional setback of losing his beloved partner Renee Walker. Meanwhile, the administration attempts to keep the historic and pivotal peace agreement on track as undermining forces surface.

Watch it >>

Will’s return to the Upper East Side continues to stir up problems for Serena, Lily and his long-standing rival, Rufus. Serena and Jenny’s relationship is strained as a result of Jenny’s deception. Blair spends time on the Columbia campus and realizes where she truly belongs…. Dan learns that Vanessa has been keeping yet another secret from him.

Watch it >>

When Leonard and Penny aren’t speaking, Sheldon goes to extremes to keep them both happy.

Watch it >>

The demon Crowley promises to help Dean and Sam find the remaining Horseman rings so they can trap Lucifer.

Watch it >>