Simon Helberg

University physicists Leonard and Sheldon don't have a clue about girls, dating, clothes, parties, or basically life. So when a pretty blonde moves into the apartment across the hall, the guys decide to get an education outside of the classroom.

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.

Abigail (Dianna Agron), a divorced mother of two, who is struggling to balance the dynamic forces within her dysfunctional family as she attempts to cultivate new love.

When Alex gives up on earth and decides to leave it all behind for a one-way mission to Mars, an unexpected romance forces him to choose between an uncertain journey to the stars or an even more uncertain journey of the heart.

Regarding the opposite sex, they're on a steep learning curve. In every other sense, they're geniuses. Join physicists Leonard Hofstadter (Johnny Galecki) and Sheldon Cooper (Jim Parsons) as they ponder black holes, chemical deviations, girls, and other mysteries of the universe.

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...

Leonard and Sheldon are brilliant physicists -- geniuses in the laboratory but socially-challenged everywhere else. Enter beautiful, street-smart neighbor Penny, who aims to teach them a thing or two about life. 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...

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...

A New York socialite who dreams of becoming a great opera singer. While the voice she hears in her head is beautiful, to everyone else it is hilariously awful. Her husband and biggest fan, St. Clair Bayfield is determined to protect his beloved Florence from the truth. But when Florence stages a huge concert at Carnegie Hall, he faces his greatest challenge to make sure her performance is a rousing success.

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.