The Big Bang Theory

1The Conjugal Conjecture

22 minSep 19, 2016★ 6.9

After Sheldon’s mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny’s family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan, and her drug dealing brother, Randall.

2The Military Miniaturization

19 minSep 26, 2016★ 6.8

Colonel Williams, an Air Force representative from the Department of Material Command sits down to talk with Wolowitz.

3The Dependence Transcendence

20 minOct 3, 2016★ 6.9

Tensions rise when the boys struggle to complete their government project on time and Sheldon tries an energy drink to stay awake. Also, Penny and Amy go to a “party” at Bert the geologist’s house, and Koothrappali learns Bernadette’s true feelings about her pregnancy when they clean out the future baby room.

4The Cohabitation Experimentation

20 minOct 10, 2016★ 7.5

When Amy’s apartment floods, she proposes a “cohabitation experiment” with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do.

5The Hot Tub Contamination

20 minOct 17, 2016★ 7.2

Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation.

6The Fetal Kick Catalyst

18 minOct 27, 2016★ 7.0

Penny is surprised to learn she has fans of her performance in "Serial Ape-ist" when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny’s apartment, and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way.

7The Veracity Elasticity

21 minNov 3, 2016★ 7.0

In order to continue living with Sheldon, Amy lies to him about repairs being made to her apartment and they host an "on location" episode of "Fun With Flags" in Penny’s apartment. Also, Leonard lets Penny decorate Sheldon’s old room after he learns that she has been secretly moving Leonard’s collectibles into storage.

8The Brain Bowl Incubation

19 minNov 10, 2016★ 7.3

After a successful experiment combining their genes, Sheldon will stop at nothing to convince Amy they should procreate. Also, Koothrappali is embarrassed to tell the gang what the new woman he’s dating does for a living.

9The Geology Elevation

19 minNov 17, 2016★ 7.1

When Bert, a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with jealousy. Also, Wolowitz finds an old remote control Stephen Hawking action figure he invented.

10The Property Division Collision

20 minDec 1, 2016★ 7.1

Sheldon and Leonard try to divvy up their shared belongings, but can’t agree on anything. Also, Koothrappali and Stuart fight to be the most helpful during Bernadette’s final weeks of pregnancy.

11The Birthday Synchronicity

20 minDec 15, 2016★ 6.9

Howard and Bernadette welcome their new baby and Sheldon and Amy celebrate Amy’s birthday.

12The Holiday Summation

21 minJan 5, 2017★ 6.9

Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas.

13The Romance Recalibration

19 minJan 19, 2017★ 6.7

When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby’s room.

14The Emotion Detection Automation

19 minFeb 2, 2017★ 6.8

Sheldon beta-tests an MIT invention after hearing it can help him read people’s emotions. Also, Leonard can’t hide his feelings when Penny announces her brother is coming to town, and Raj invites his ex-girlfriends over to give him dating advice.

15The Locomotion Reverberation

20 minFeb 9, 2017★ 6.9

Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system. Also, Penny and Amy take Bernadette out for the night, leaving Raj and Stuart to care for baby Halley.

16The Allowance Evaporation

18 minFeb 16, 2017★ 6.6

Sheldon and Amy have their first fight since moving in together, and Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.

17The Comic-Con Conundrum

19 minFeb 23, 2017★ 6.9

With Koothrappali cut off from his father’s fortune, he appoints Sheldon to help him get out of debt. Also, Penny considers joining Leonard at Comic-Con.

18The Escape Hatch Identification

20 minMar 9, 2017★ 6.8

When Raj moves out of his apartment, Leonard and Penny offer him Sheldon's old room.

19The Collaboration Fluctuation

18 minMar 30, 2017★ 6.9

Leonard, Penny and Raj adjust to their new living arrangement, and Sheldon takes an interest in Amy’s work.

20The Recollection Dissipation

19 minApr 6, 2017★ 6.8

Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day. Also, Bernadette is nearing the end of her maternity leave and must return to work.

21The Separation Agitation

20 minApr 13, 2017★ 6.8

Howard and Bernadette have a hard time leaving Halley in day care when Bernadette returns to work. Also, Bert introduces the gang to his new girlfriend, Rebecca.

22The Cognition Regeneration

20 minApr 27, 2017★ 6.6

Leonard isn’t thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.

23The Gyroscopic Collapse

19 minMay 4, 2017★ 6.9

After Leonard, Sheldon and Wolowitz celebrate the completion of the top secret air force project, they are met with an unpleasant surprise. Also, Amy is offered a summer position as a visiting researcher.

24The Long Distance Dissonance

19 minMay 11, 2017★ 7.7

The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.