Socially challenged they remain, but the scientific geniuses of show always deliver hilarious results. Leonard returns from his North Sea expedition to find that his relationship with Penny involves more beta-testing than he's ever done in a lab. Howard's attachment issues with women in his life in particular and Raj's social breakthrough with women in general provide more laughs. Bernadette and Amy stand staunchly by the men in their life, even when...

Prepare to enter phase nine of televisions perpetual laughter experiment as the show successfully fuses the elements of science and sitcom. Our two genius roommates, Leonard and Sheldon, and their friends are back once again (smarter, but no wiser). Last season, Sheldon went soul-searching (on a train, of course) and was prepared to make some substantial revisions on his Relationship Agreement with Amy, when everything changed.

Jettison the gingerbread. Nix The Nutcracker. Your yuletide just got exponentially funnier! We've gathered 9 beloved holiday-themed episodes of The Big Bang Theory in one prodigious package. Relive all the laughs with Leonard, Sheldon, Penny, Howard, Raj, Bernadette, and Amy as they put their unique spin on the season's festivities. Experience Sheldon's extreme gift protocol. Celebrate Thanksgiving when a mistake from Penny's past comes back to haunt...

Despite their on-again, off-again relationship in the past, Leonard and Penny have finally gotten married. Even Sheldon has found a female companion, entering into a 'relationship agreement' with neurobiologist Amy Farrah Fowler, and he recently took their relationship to the next level by marrying her after a long courtship. Will their equation for marital bliss alter the chemistry between these two beautiful minds? Quantum comedy converges in the...

The Leonard and Penny went from next-door neighbors to next-door newlyweds with a nuptial excursion to Vegas. This season, they find themselves in a repeating paradigm as they re-create their wedding, this time with family including Penny's mother and brother and Leonard's parents. Meanwhile, the Relationship Agreement between Sheldon and Amy added an entirely new subsection with their annual coitus clause.

It's been nearly 30 years since Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished. Now, a new team, led by physicist Ben Song, has been assembled to restart the project in hope of understanding the mysteries behind the machine and the man who created it. Everything changes, however, when Ben makes an unauthorized leap into the past, leaving the team behind to solve the mystery of why he did it. At Ben's side throughout his leaps...

Two roommates, both genius physicists, live in their own world with their friends until an attractive woman moves in across the hall and helps them see life in different ways.

During World War II, Lt. Gen. Leslie Groves Jr. appoints physicist J. Robert Oppenheimer to work on the top-secret Manhattan Project. Oppenheimer and a team of scientists spend years developing and designing the atomic bomb. Their work comes to fruition on July 16, 1945, as they witness the world's first nuclear explosion, forever changing the course of history.

This season the Big Bang gang's romantic universe expands. On the rebound from Penny, Leonard falls into the arms of Raj's sister Priya. Sheldon gets a girlfriend, or rather a friend who is a girl: Amy, a dour neurobiologist who declares herself besties with Penny. Howard and Bernadette heat up. And so do Raj and Bernadette (at least in Raj's Bollywood daydream). All in the furtherance of award-winning genius comedy.