Watch The Big Bang Theory

The Big Bang Theory is a comedy that depicts the private and professional lives of four young men who work in a California University's science department. The comedy is derived from the geeky nature of these young men who often have awkward and embarrassing social interactions with women. Sheldon and Leonard share an apartment, while Raj has his own apartment and Howard lives with his mother. Each of the four characters has his own distinct personality which enhances the interactions of the group as a whole.

Sheldon is the member of the group who is considered to be the brainiest. This opinion is largely held by Sheldon, who sees himself as a superior being to most people on the planet. Sheldon thinks in logical terms which makes it hard for him to understand the decisions people make when they use their emotions. Sheldon holds a doctorate in physics which enables him to work in the physics department of the university. Although he has a superior mentality, he also has moments where the little boy in him comes out. This is especially true when he gets sick and wants to be waited on by either Leonard or their neighbor Penny, who will sing him a child's lullaby called Soft Kitty.

Leonard also has a doctorate in physics, but does not have the superior attitude that Sheldon has. Leonard's personality is often needy and more empathetic than Sheldon's. The odd circumstances of their childhoods placed them in families which were in direct opposition to the personalities they possessed. Leonard comes from a family of doctors with his mother holding a degree in psychiatry. In some episodes she visits Leonard and spends her time analyzing everything he does. Sheldon on the other hand, comes from a classic Texas family where his mother is a devout believer in Jesus. She also comes to visit on occasion and is the only person who seems to have any degree of control over her son.

Howard is a typical Jewish boy living at home with his mother even though he is well into his thirties. Howard is the only member of the group who does not possess a degree in physics. He has a Master's degree in engineering from MIT. This enables him to work in the engineering department at the same university as Sheldon and Leonard. Howard often makes devices which are used by the space program. In one episode he designed a toilet for use on the space station. After the toilet was already in place on the space station he discovered the design had a flaw. Instead of disposing of the waste through the base or bottom of the receptacle, it shot it out through the top.

Raj is also a physicist who specializes in astronomy. Raj comes from India where his parents are extremely wealthy. Raj and Howard have personalities which balance each other out. Howard is often obnoxious and considers himself a playboy or ladies man, while Raj has a more feminine side which makes him very sensitive to the needs of others. He does like to meet women, but has an emotional block which prevents him from being able to speak while in the presence of any woman other than his mother or sister. This block is removed whenever he drinks alcohol.

Penny is a young woman who lives across the hall from Sheldon and Leonard. From the moment she first moved in Leonard was smitten with her. Penny's character is free spirited and beautiful and not even close to having the amount of education of any of the young men in the group. She comes from Nebraska and has a street wise attitude which allows her to stand up and take charge of situations which usually render the men useless. Penny works as a waitress at the Cheesecake Factory and dreams of becoming an actress.

Additional characters who develop in the series include Stuart, who owns a comic book store where the guys often hang out and Bernadette, who works part-time at the Cheesecake Factory with Penny. Bernadette also works in the science department at the university and eventually becomes Howard's girlfriend. Later in the series, Sheldon also meets and forms a relationship with a female scientist named Amy who becomes friends with Penny and Bernadette.

Monday 8:00 pm et/pt on CBS
10 Seasons, 210 Episodes - Currently Airing
September 24, 2007
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The Big Bang Theory Full Episode Guide

  • Sheldon can't keep up with the late nights Howard and Leonard are putting in, Raj spends the day with a pregnant Bernadette and Penny and Amy attend a faculty party.

  • The Air Force shows interest in the guidance system and Penny lets it slip at work that Bernadette is expecting.

  • A night of revelry and bad decisions on behalf of the guys' parents results in an awkward morning. Penny's dysfunctional family is in town as well; chaos ensues.

  • Leonard and Penny get remarried in front of their friends. Meanwhile, chaos erupts when Leonard's parents and Sheldon's mother make a connection. Howard gets a cryptic email from the Air Force about his invention.

The Big Bang Theory News

'Big Bang Theory' Gets a (Last?) Season Premiere Date

The series might not return after the upcoming season, but at least now we know when season 10 will begin.

'Big Bang Theory' Season Finale: Another Wedding?

The Big Bang Theory's season 9 has been all about nuptials, from the beginning to the end. The season-ending wedding ceremony promises to be bigger and better than the one that began the season.

Kaley Cuoco Not Leaving 'Big Bang Theory'

Sometimes it's hard to know who to believe, but when it comes to choosing between rumors and Kaley Cuoco herself, you should probably choose Kaley.

Really Big Bang: Sheldon and Amy Go All the Way

Few characters on TV are as pure and innocent as Sheldon Cooper, at least for now. That will change in a few weeks, though.

Big Bang Divorce: Kaley Cuoco and Husband Split

In the land of make-believer, Kaley Cuoco is experiencing marital bliss. In real life, not so much.

Big Bang Wedding Wins the Night, Blindspot Draws a Crowd

As the fall TV season starts to roll out, it looks like CBS' Monday-night line-up is the one to beat. NBC, though, might just turn at least part of the night into a real battle.

Big Bang Wedding: It's Going to Happen

Have you been worried that Leonard and Penny aren't actually going to be get married? According to The Big Bang Theory's showrunner, you shouldn't be.

'Big Bang Theory' Season 8 Preview: Sheldon's Back

Get your first look at the new season of "The Big Bang Theory" with this preview clip!

'Big Bang Theory' Stars Settle Wage Dispute, Now Make Ridiculous Amounts of Money

They're making HOW much per year?!

'Big Bang Theory' Fans: Don't Worry Too Much About the Wage Dispute

With key cast members demanding a significant raise, production on the comedy has been postponed. Should we panic? Probably not. But maybe just a little.

Big Banned 'Theory': Shows and Movies You Won't Believe China Has Outlawed

Political ties between America and China can be tense, but we never suspected Sheldon Cooper to be the cause. The Chinese government announced this week that they would be adding four new American shows to the list of banned shows in the country: "The Big Bang Theory," "NCIS," "The Good Wife" and "The Practice." In particular, the ban is reaching out to streaming sites like Youku and Tencent (think YouTube but with more TV shows and other copyrighted content) in an effort to prevent them from hosting the shows on their sites.

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