فصل 1

Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.

بازیگران مهمان: Brian Patrick Wade، ورنی واتسون-جانسون

Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.

Leonard asks a woman out after he finds out that Penny is seeing someone.

بازیگران مهمان: Sara Gilbert، Sherry Weston، Allen Nabors، Treisa Gary

Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.

بازیگران مهمان: لاری میت کالف، Mark Harelik، Sierra Edwards، Netta Most

Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.

بازیگران مهمان: Sara Gilbert

Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.

بازیگران مهمان: Kimberly Kevon Williams، Brian Patrick Wade، Erin Allin O'Reilly، Rachel Cannon

With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team

بازیگران مهمان: Brooke D'Orsay، James Hong، Carol Ann Susi، کیمبرلی بروکس

Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.

بازیگران مهمان: Alice Amter، Brian George، Sarayu Blue

When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard, and Penny's intervention only exacerbates the situation.

بازیگران مهمان: Talbott Lin، Howard Chan

Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.

بازیگران مهمان: DJ Qualls

With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn't a clue what she's in for.

بازیگران مهمان: Erin Allin O'Reilly، Carol Ann Susi

With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.

بازیگران مهمان: Emma Degerstedt، Joel Brooks، Mark Harelik، Austin Lee

Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.

بازیگران مهمان: Sara Gilbert، Mark Harelik، Sandra Marquez، Sergio Enrique

When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.

بازیگران مهمان: Andrew W. Walker

The rest of the gang fall for Sheldon's twin sister, and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.

بازیگران مهمان: Courtney Henggeler

Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.

بازیگران مهمان: ورنی واتسون-جانسون، Judith Moreland، Ronald Hunter، Chuck Carter

Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.

بازیگران مهمان: James Hong