Worlds collide in Season 3! A love affair with Penny has opened a big, wide, wonderful world of romance for Leonard. But Sheldon likes the world just the way it was, thank you. All of which makes for a zany comic triangle with brainy, clueless Sheldon and practical, grounded Penny hilariously vying for the role of hypotenuse.

He's baaack! Sheldon is retrieved from his soul-searching cross-country train trip (older but no wiser) and that means the gang's all here to spread another year's cheer as TV's most attended laugh seminar. Enroll in this comic curriculum to explore Leonard's minor surgery becoming a major catastrophe from his roommate, Howard's obsession over his mom's relationship with retailer-turned-caretaker Stuart, and the peculiar results of Penny's technique...

Physicists Leonard and Sheldon understand everything from the inescapable gravitational pull of a black hole to the intricate structure of the atom. But take those atoms and assemble them into a woman, and their comprehension comes to a grinding halt. This season, Leonard gets a girl. So does Sheldon. (Sheldon?!), Howard drives the Mars Rover into a ditch, Raj woos a terminator, gorgeous girl-next-door Penny falls under the spell of Age of Conan,...

Follow the drama when the government is temporarily passed from a Democratic administration to the Republican Speaker of the House, as President Bartlet copes with the kidnapping of his youngest daughter Zoey.

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...

This season chronicles the transition between the administration of President Bartlet and the race for the new presidency between Congressman Santos and Senator Vinick.

Follow the re-election of President Bartlet to his second term and some crises both during and after the election in this 22-episode fourth season.

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...

The President and staff have been targeted for disruption by rival politicians, soon after being targeted by would-be assassins. The President heads through midterm elections and into a crisis that leads to allegations of criminal conduct. 22 episodes.

The 22-episode third season whose storylines include the investigation into the alleged cover-up of President Barlet's illness, the early bid for a second term and confrontations with global terrorism. Reel- and real-life events profoundly intersect in the historic Isaac and Ishmael episode made in the wake of the terrorist attacks of September 11, 2001. And must-see bonus features include a special The West Wing look at the executive branch featuring...