The Big Bang Theory 1×17: The Tangerine Factor
First aired: 5/19/2008 Production Code: 3T6616
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.
The Big Bang Theory 1×16: The Peanut Reaction
First aired: 5/12/2008 Production Code: 3T6615
Penny wants to throw a surprise party for Leonard, but Sheldon’s indulgence at an electronics store throws her off-track.
The Big Bang Theory 1×15: The Pork Chop Indeterminacy
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.
The Big Bang Theory 1×14: The Nerdvana Annihilation
When the delivery of a full-size prop of 1960’s The Time Machine makes Penny miss work, she scolds Leonard about his sci-fi collectibles. He decides it’s time to give up such childish pursuits.
The Big Bang Theory 1×13: The Bat Jar Conjecture
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.
The Big Bang Theory 1×12: The Jerusalem Duality
With Sheldon rattled and impossible to be around after meeting Dennis, a 15-year-old physicist who’s smarter than he, the rest of the guys search for a way to eliminate the threat.
The Big Bang Theory 1×11: The Pancake Batter Anomaly
With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed for by Penny, who hasn’t a clue what she’s in for.
The Big Bang Theory 1×10: The Loobenfeld Decay
Leonard and Sheldon each lie to avoid hearing Penny sing in a production of Rent. However, Sheldon’s lie becomes a bit too complicated for its own good.
The Big Bang Theory 1×9: The Cooper-Hofstadter Polarization
When they’re invited to present at a physics conference, Sheldon’s reluctance to share the credit leads to a tiff between he and Leonard, and Penny’s intervention only exacerbates the situation.
The Big Bang Theory 1×8: The Grasshopper Experiment
Raj’s parents set him up on a blind date, and when he discovers he can talk to her, she shows interest in Sheldon.






















