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Arch-nerds Leonard and Sheldon may know more than their fair share about subatomic particles, but when it comes to people in general, and women in particular, they're absolutely clueless...

About the Show

Arch-nerds Leonard and Sheldon may know more than their fair share about subatomic particles, but when it comes to people in general, and women in particular, they're absolutely clueless...

Series 1 Summary

Leonard and Sheldon's geeky world is rocked to its core when the gorgeous Penny moves in across the hall. But what will this 'cheesecake scented goddess' make of them?

  • Big Bang Theory

    Episode 1 - Pilot

    Leonard and Sheldon are brilliant physicists, but have no luck when it comes to understanding women. All this begins to change when the beautiful Penny moves in next door.

  • Big Bang Theory

    Episode 2 - The Big Bran Hypothesis

    Sheldon is bothered by how messy Penny's flat is and he sneaks in to clean and organise it, but Penny isn't best pleased when she finds out

  • Big Bang Theory

    Episode 3 - The Fuzzyboots Corollary

    Leonard is depressed when he discovers that Penny is seeing someone, and he actually summons up the courage to ask a woman out on a date

  • Big Bang Theory

    Episode 4 - The Luminous Fish Effect

    Getting fired forces Sheldon to ponder life outside physics, leaving Leonard to take drastic action to snap his friend out of his reverie

  • Big Bang Theory

    Episode 5 - The Hamburger Postulate

    Leonard worries that he's wasting his time on Penny, so he gets closer to Leslie. Meanwhile, Sheldon frets over a change to his hamburger routine.

  • Big Bang Theory

    Episode 6 - The Middle Earth Paradigm

    Penny hosts a Halloween party, putting Leonard, Sheldon, Howard and Raj through a new test of their social skills. Perhaps unsurprisingly, they fail it miserably...

  • Big Bang Theory

    Episode 7 - The Dumpling Paradox

    When Howard seduces Penny's friend and spends the night with her in Penny's flat, Penny asks if she can sleep on Leonard and Sheldon's sofa

  • Big Bang Theory

    Episode 8 - The Grasshopper Experiment

    Raj panics when his parents arrange a blind date for him, but discovers that he actually can talk to women after a few drinks

  • Leonard

    Episode 9 - The Cooper-Hofstadter Polarization

    Sheldon and Leonard are asked to present a paper at a physics conference, but Sheldon is reluctant to share the credit. Penny tries to help.

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    Episode 10 - The Loobenfeld Decay

    Leonard and Sheldon each tell a lie to avoid going to see Penny on stage singing in a production of Rent, but Sheldon's lie gets out of control

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    Episode 11 - The Pancake Batter Anomaly

    Penny volunteers to nurse Sheldon when he's sick. However, his friends know how miserable he is when he's ill and stay well away from him.

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    Episode 12 - The Jerusalem Duality

    When Sheldon meets a 15-year-old physicist who is clearly much brighter than he is, his confidence is shaken to the core

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    Episode 13 - The Bat Jar Conjecture

    Sheldon is ousted from the gang's Physics Bowl quiz team, so he decides to prove his superiority by forming his own team for the event

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    Episode 14 - The Nerdvana Annihilation

    Penny makes fun of Leonard's habit of collecting goofy memorabilia, but his friends kick up a fuss and try to keep him on the side of the nerds

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    Episode 15 - The Shiska Indeterminacy

    Sheldon's twin sister Missy is in town and, bizarrely, she's a stunner! Leonard, Howard and Raj compete for her attention, but then Sheldon declares he will decide who dates his sister...

  • Big Bang Theory

    Episode 16 - The Peanut Reaction

    Penny wants to throw a surprise party for Leonard and gets support from Howard and Raj, but Sheldon's indulgence in an electronics shop throws her off track

  • Big Bang Theory

    Episode 17 - The Tangerine Factor

    When Penny breaks up with her boyfriend, Leonard plucks up the courage to ask her out. Both of them then ask Sheldon for advice about the date.

The Big Bang Theory synopsis

Arch-nerds Leonard and Sheldon may know more than their fair share about subatomic particles, but when it comes to people in general, and women in particular, they're absolutely clueless...

Episode Guide >

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4 Episodes

Next on TV

The Staircase Implementation

This episode flashes back to the start of Sheldon and Leonard's friendship seven years previously and explains the housemate agreement

E4 6pm Sat 20 Dec