The Big Bang Theory
All Episodes (17)
The Tangerine Factor
Original Airdate: 2008-05-19Synopsis:
When Leonard finally works up the courage to ask Penny out on a date, they each turn to Sheldon for advice.The Peanut Reaction
Original Airdate: 2008-05-12Synopsis:
Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.The Shiksa Indeterminacy
Original Airdate: 2008-05-05Synopsis:
Leonard devises a plan to eliminate his rivals when he, Wolowitz and Koothrappali all fall for Sheldon's twin sister, but his plan backfires when Sheldon decides to choose who his sister dates.The Nerdvana Annihilation
Original Airdate: 2008-04-28Synopsis:
Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.The Bat Jar Conjecture
Original Airdate: 2008-04-21Synopsis:
When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.The Jerusalem Duality
Original Airdate: 2008-04-14Synopsis:
Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.The Pancake Batter Anomaly
Original Airdate: 2008-03-31Synopsis:
Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.The Loobenfeld Decay
Original Airdate: 2008-03-24Synopsis:
Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing, but the elaborate lie Sheldon tells leads to an unexpected result.The Cooper-Hofstadter Polarization
Original Airdate: 2008-03-17Synopsis:
Penny tries to mediate when Sheldon and Leonard disagree on whether to present their joint findings at a physics conference.The Grasshopper Experiment
Original Airdate: 2007-11-12Synopsis:
On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks, but his date takes an interest in Sheldon.The Dumpling Paradox
Original Airdate: 2007-11-05Synopsis:
Penny sleeps on Leonard and Sheldon's couch when Wolowitz takes over her apartment; the guys ask Penny to join their ``Halo'' team.The Middle Earth Paradigm
Original Airdate: 2007-10-29Next Airing: May 19, 2008
CHWI08:30 PM
Synopsis:
Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.The Hamburger Postulate
Original Airdate: 2007-10-22Next Airing: May 26, 2008
09:00 PM
Synopsis:
Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).The Luminous Fish Effect
Original Airdate: 2007-10-15Synopsis:
Getting fired gives Sheldon the opportunity to explore life beyond physics, but when he spends his time weaving ponchos and acting like a shut-in, Leonard calls Sheldon's mother for assistance.