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The Big Bang Theory


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The Big Bang Theory

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Episode     Online Video

S03, E12  (First Aired: 
Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.
  • Tue 2/16
  • 8:00PM-8:30PM
  • TBS
  •  

S03, E13  (First Aired: 
After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
  • Tue 2/16
  • 8:30PM-9:00PM
  • TBS
  •  

S03, E14  (First Aired: 
Sheldon tries to figure out the answer to a physics problem by working with Penny.
  • Tue 2/16
  • 9:00PM-9:30PM
  • TBS
  •  

S03, E15  (First Aired: 
Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.
  • Tue 2/16
  • 9:30PM-10:00PM
  • TBS
  •  

S03, E16  (First Aired: 
Sheldon ends up in traffic court after getting a ticket because of Penny.
  • Tue 2/16
  • 10:00PM-10:30PM
  • TBS
  •  

S03, E17  (First Aired: 
When the guys buy a ring from ``The Lord of the Rings'' at a garage sale, the item threatens to tear them apart.
  • Tue 2/16
  • 10:30PM-11:00PM
  • TBS
  •  

S03, E18  (First Aired: 
Sheldon's stage fright stands between him and a coveted award.
  • Wed 2/17
  • 8:00PM-8:30PM
  • TBS
  •  

S03, E19  (First Aired: 
Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again.
  • Wed 2/17
  • 8:30PM-9:00PM
  • TBS
  •  

S03, E20  (First Aired: 
Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.
  • Wed 2/17
  • 9:00PM-9:30PM
  • TBS
  •  

S09, E07  (First Aired: 
Sheldon struggles to keep his emotions in check when he is interviewed for a documentary about Spock; Penny and Leonard make a surprising discovery; Wolowitz and Bernadette get into a disagreement about remodeling his childhood home.
  • Wed 2/17
  • 9:30PM-10:00PM
  • CBS
  •  

S03, E21  (First Aired: 
Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.
  • Wed 2/17
  • 9:30PM-10:00PM
  • TBS
  •  

S03, E22  (First Aired: 
Leonard tells Penny about how he met Sheldon and what happened to the elevator.
  • Wed 2/17
  • 10:00PM-10:30PM
  • TBS
  •  

S03, E23  (First Aired: 
Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.
  • Wed 2/17
  • 10:30PM-11:00PM
  • TBS
  •  

NEW
S09, E16 
The gang celebrates news of Bernadette's pregnancy by singing karaoke; Wolowitz's reaction to the pregnancy announcement worries Bernadette; Wolowitz believes he needs to make more money to support his growing family.
  • Thu 2/18
  • 8:00PM-8:31PM
  • CBS
  •  

S04, E01  (First Aired: 
Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.
  • Thu 2/18
  • 9:00PM-9:30PM
  • TBS
  •  

S04, E02  (First Aired: 
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
  • Thu 2/18
  • 9:30PM-10:00PM
  • TBS
  •  

S04, E03  (First Aired: 
When Sheldon searches for an alternative to human companionship, the guys become concerned.
  • Sat 2/20
  • 7:30PM-8:00PM
  • TBS
  •  

S04, E04  (First Aired: 
An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.
  • Sat 2/20
  • 8:00PM-8:30PM
  • TBS
  •  

S04, E05  (First Aired: 
Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.
  • Sat 2/20
  • 8:30PM-9:00PM
  • TBS
  •  

S04, E06  (First Aired: 
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
  • Sat 2/20
  • 9:00PM-9:30PM
  • TBS
  •  

S04, E07  (First Aired: 
Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.
  • Sat 2/20
  • 9:30PM-10:00PM
  • TBS
  •  

S04, E08  (First Aired: 
While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
  • Sat 2/20
  • 10:00PM-10:30PM
  • TBS
  •  

S04, E09  (First Aired: 
Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.
  • Sat 2/20
  • 10:30PM-11:00PM
  • TBS
  •  

S04, E10  (First Aired: 
Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.
  • Sun 2/21
  • 7:00PM-7:30PM
  • TBS
  •  

S04, E11  (First Aired: 
The guys try to bond with Penny's new boyfriend through a costume contest.
  • Sun 2/21
  • 7:30PM-8:00PM
  • TBS
  •  

S04, E12  (First Aired: 
Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.
  • Sun 2/21
  • 8:00PM-8:30PM
  • TBS
  •  

S04, E13  (First Aired: 
Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.
  • Sun 2/21
  • 8:30PM-9:00PM
  • TBS
  •  

S04, E14  (First Aired: 
Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.
  • Sun 2/21
  • 9:00PM-9:30PM
  • TBS
  •  

S04, E15  (First Aired: 
A wealthy donor makes Leonard question what he is willing to do for science.
  • Sun 2/21
  • 9:30PM-10:00PM
  • TBS
  •  

S04, E16  (First Aired: 
Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.
  • Sun 2/21
  • 10:00PM-10:30PM
  • TBS
  •  

S04, E17  (First Aired: 
Sheldon is upset when he realizes Leonard is the center of their group of friends.
  • Sun 2/21
  • 10:30PM-11:00PM
  • TBS
  •  

S04, E18  (First Aired: 
Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.
  • Tue 2/23
  • 8:00PM-8:30PM
  • TBS
  •  

S04, E19  (First Aired: 
The guys try to figure out who hacked Sheldon's online-game account.
  • Tue 2/23
  • 8:30PM-9:00PM
  • TBS
  •  

S04, E20  (First Aired: 
Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.
  • Tue 2/23
  • 9:00PM-9:30PM
  • TBS
  •  

S04, E21  (First Aired: 
Priya dissects the roommate agreement; the ladies take Sheldon dancing.
  • Tue 2/23
  • 9:30PM-10:00PM
  • TBS
  •  

S04, E22  (First Aired: 
Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.
  • Tue 2/23
  • 10:00PM-10:30PM
  • TBS
  •  

S04, E23  (First Aired: 
Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.
  • Tue 2/23
  • 10:30PM-11:00PM
  • TBS
  •  

S04, E24  (First Aired: 
Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate; Raj becomes Sheldon's roommate.
  • Wed 2/24
  • 8:00PM-8:30PM
  • TBS
  •  

S05, E01  (First Aired: 
Penny worries that she has ruined her relationship with her friends; Sheldon takes over the paintball team.
  • Wed 2/24
  • 8:30PM-9:00PM
  • TBS
  •  

S05, E02  (First Aired: 
Amy is caught in the middle when Penny and Sheldon get into an argument over a pre-owned chair; Leonard tries to make his long-distance relationship more exciting.
  • Wed 2/24
  • 9:00PM-9:30PM
  • TBS
  •  

S05, E03  (First Aired: 
Amy and Leonard try to become better acquainted; Bernadette, Howard and Mrs. Wolowitz spend the weekend together.
  • Wed 2/24
  • 9:30PM-10:00PM
  • TBS
  •  

S05, E04  (First Aired: 
Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.
  • Wed 2/24
  • 10:00PM-10:30PM
  • TBS
  •  

S05, E05  (First Aired: 
Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.
  • Wed 2/24
  • 10:30PM-11:00PM
  • TBS
  •  

NEW
S09, E17 
For the first time in nine years, the gang celebrates Sheldon's birthday -- surprising him with a special guest.
  • Thu 2/25
  • 8:00PM-8:31PM
  • CBS
  •  

S05, E06  (First Aired: 
Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.
  • Thu 2/25
  • 9:00PM-9:30PM
  • TBS
  •  

S05, E07  (First Aired: 
An attractive comic book artist tests Leonard and Priya's relationship; Sheldon tries to scare his friends.
  • Thu 2/25
  • 9:30PM-10:00PM
  • TBS
  •  

S05, E08  (First Aired: 
Amy is devastated when Penny and Bernadette shop for wedding dresses without her.
  • Sat 2/27
  • 7:30PM-8:00PM
  • TBS
  •  

S05, E09  (First Aired: 
Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.
  • Sat 2/27
  • 8:00PM-8:30PM
  • TBS
  •  

S05, E10  (First Aired: 
Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.
  • Sat 2/27
  • 8:30PM-9:00PM
  • TBS
  •  

S05, E11  (First Aired: 
Leonard must face the bully who targeted him in high school; Penny confronts her past actions.
  • Sat 2/27
  • 9:00PM-9:30PM
  • TBS
  •  

S05, E12  (First Aired: 
Amy is upset with Sheldon when he isn't impressed with her recent accomplishment; Howard struggles with Bernadette's aversion to children.
  • Sat 2/27
  • 9:30PM-10:00PM
  • TBS
  •  

S05, E13  (First Aired: 
Everything could change when Leonard spontaneously invites Penny to a romantic dinner.
  • Sat 2/27
  • 10:00PM-10:30PM
  • TBS
  •  

S05, E14  (First Aired: 
Penny and Leonard experiment with their new relationship; Raj forms a bond with his phone's virtual assistant.
  • Sat 2/27
  • 10:30PM-11:00PM
  • TBS
  •