 Episode 01. Pilot
Summary: Leonard and Sheldon meet their new and beautiful neighbor, Penny. Taken back by her charm, they decide to get to know her, despite their lack of conversational skills. They do Penny a favor which ends comidically.
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Airdate: 24 September 2007
 Episode 02. The Big Bran Hypothesis
Summary: Leonard agrees to sign for a package, on Penny's behalf. When Sheldon witnesses Penny's lack of cleanliness in her apartment, he plans to clean it up.
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Airdate: 01 October 2007
 Episode 03. The Fuzzy Boots Corollary
Summary: Leonard finds out that his crush, Penny, is taken. In order to move on he decides to ask a another woman out.
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Airdate: 08 October 2007
 Episode 04. The Luminous Fish Effect
Summary: 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.
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Airdate: 15 October 2007
 Episode 05. Hamburger Postulate
Summary: Leonard has a one-night stand with fellow scientist Leslie Winkle
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Airdate: 22 October 2007
 Episode 06. The Middle Earth Paradam
Summary: Leonard and Sheldon and their friends attend Penny's Halloween party
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Airdate: 29 October 2007
 Episode 07. The Dumpling Paradox
Summary: Penny temporarily sleeps on Leonard and Sheldon's couch when Wolowitz romances her friend and they take over Penny's apartment. Penny learns to play Halo.
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Airdate: 5 November 2007
 Episode 08. The Grasshopper Effect
Summary:
Koothrappali is overwhelmed when his parents arrange a blind date for him, but after a few drinks he discovers he can actually talk to women. Unfortunately, his gorgeous date is more interested in Sheldon.
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Airdate: 12 November 2007
 Episode 09. The Cooper-Hofstadter Polarization
Summary:
Sheldon and Leonard are asked to a physics conference to present their work together, but that leads to a feud because Sheldon's too arrogant to share the honor. Penny does her best to mediate, but only makes things worse.
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Airdate: 17 March 2008
 Episode 10. The Loobenfeld Decay
Summary:
Leonard lies to Penny to avoid hearing her sing a second time, but Sheldon extends the lie, which makes things worse, leading Leonard to produce a nonexistent cousin (D.J. Qualls).
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Airdate: 24 March 2008
 Episode 11. The Pancake Batter Anomaly
Summary: Sheldon gets sick, but the guys refuse to take care of him because he's such a bad patient, which leaves an unsuspecting Penny to nurse him back to health.
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Airdate: 31 March 2008
 Episode 12. The Jerusalem Duality
Summary: Sheldon becomes jealous of a 15-year-old physics prodigy, so he and Leonard come up with a plan to sabotage the young man's research.
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Airdate: 14 April 2008
 Episode 13. The Bat Jar Conjecture
Summary: 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.
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Airdate: 21 April 2008
 Episode 14. The Nerdmabelia Scattering (aka The Hello Kitty Instability)
Summary: 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.
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Airdate: 28 April 2008
 Episode 15. The Shiksa Indeterminacy/The Pork Chop Indeterminacy
Summary: The friends all fall for Sheldon's sister and Leonard comes up with a plan to get rid of his rivals, but Sheldon announces that he will decide whom his sister dates.
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Airdate: 5 May 2008
 Episode 16. The Peanut Reaction
Summary: Penny's plans for a surprise birthday party for Leonard, who doesn't usually mark the occasion, get thrown off-kilter when Sheldon gets a chance to live out one of his biggest dreams.
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Airdate: 12 May 2008
 Episode 17. The Tangerine Factor
Summary: Leonard asks Penny out on a date after she breaks up with her boyfriend. To prepare for the big night, Leonard practices the date the day before with the guys.
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Airdate: 19 May 2008
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Title: Killer Movie
Title: Penthouse
Title: The Big Bang Theory
The Big Bang Theory: Season 1
8 Simple Rules: Season 1
Debating Robert Lee: DVD