The Big Bang Theory: Season 9

Episodes

# Air Date Title
1 Sep 21
2015

The Matrimonial Momentum

Sheldon is confronted by a mystery of the universe he cannot unravel: when a woman wants time apart to think, exactly how much time does that mean, and is there any way to hurr…

2 Sep 28
2015

The Separation Oscillation

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 wi…

3 Oct 05
2015

The Bachelor Party Corrosion

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…

4 Oct 12
2015

The 2003 Approximation

Leonard and Penny finally move in together leaving Sheldon very upset with this big change in his life and wishing he could go back to a time when he had no emotions in 2003 be…

5 Oct 19
2015

The Perspiration Implementation

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 fema…

6 Oct 26
2015

The Helium Insufficiency

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 Am…

7 Nov 05
2015

The Spock Resonance

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 topi…

8 Nov 12
2015

The Mystery Date Observation

Amy has a formal date which Leonard, Penny and Bernadette secretly spy on. Sheldon has Howard and Raj help him find a new girlfriend since they found Amy for him.

9 Nov 19
2015

The Platonic Permutation

It’s Thanksgiving. Sheldon and Amy go on a lunch date to the aquarium as friends. Howard, Bernadette, Raj and Emily help out at a soup kitchen. Leonard and Penny make their fir…

10 Dec 10
2015

The Earworm Reverberation

Sheldon, while listening to a Beach Boys song, realizes he cannot get the song or Amy out of his head and realizes how much she has done for him and how much she means to him.…

11 Dec 17
2015

The Opening Night Excitation

As the guys prepare to go to the premiere of the new Star Wars movie, Sheldon plans a special event for Amy’s birthday.

About The Big Bang Theory

What happens when hyperintelligent roommates Sheldon and Leonard meet Penny, a free-spirited beauty moving in next door, and realize they know next to nothing about life outside of the lab. Rounding out the crew are the smarmy Wolowitz, who thinks he’s as sexy as he is brainy, and Koothrappali, who suffers from an inability to speak in the presence of a woman.

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