The Big Bang Theory

1The Matrimonial Momentum

19 minSep 21, 2015★ 7.3

After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.

2The Separation Oscillation

19 minSep 28, 2015★ 7.3

Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of "Fun with Flags" after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny.

3The Bachelor Party Corrosion

19 minOct 5, 2015★ 7.5

The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.

4The 2003 Approximation

19 minOct 12, 2015★ 7.5

Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store.

5The Perspiration Implementation

19 minOct 19, 2015★ 7.1

The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out.

6The Helium Insufficiency

19 minOct 26, 2015★ 7.1

In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.

7The Spock Resonance

19 minNov 5, 2015★ 7.7

Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.

8The Mystery Date Observation

18 minNov 12, 2015★ 7.5

Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy on her.

9The Platonic Permutation

21 minNov 19, 2015★ 7.6

Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.

10The Earworm Reverberation

21 minDec 10, 2015★ 7.9

Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".

11The Opening Night Excitation

21 minDec 17, 2015★ 8.3

After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.

12The Sales Call Sublimation

18 minJan 7, 2016★ 7.3

Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.

13The Empathy Optimization

19 minJan 14, 2016★ 7.3

After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.

14The Meemaw Materialization

19 minFeb 4, 2016★ 7.2

Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.

15The Valentino Submergence

20 minFeb 11, 2016★ 7.3

Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.

16The Positive Negative Reaction

19 minFeb 18, 2016★ 7.4

When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby.

17The Celebration Experimentation

19 minFeb 25, 2016★ 7.1

After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.

18The Application Deterioration

18 minMar 10, 2016★ 7.3

Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.

19The Solder Excursion Diversion

21 minMar 31, 2016★ 7.3

Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.

20The Big Bear Precipitation

19 minApr 7, 2016★ 7.3

Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.

21The Viewing Party Combustion

18 minApr 21, 2016★ 7.0

Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

22The Fermentation Bifurcation

20 minApr 28, 2016★ 7.2

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group, and things don’t go as planned when Koothrappali introduces his new girlfriend, Claire.

23The Line Substitution Solution

18 minMay 5, 2016★ 7.1

Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.

24The Convergence Convergence

20 minMay 12, 2016★ 7.5

Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system.