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Big Bang Theory Episode Guide

The Decision Reverberation

Season 12 Episode 20

Air Date: 2019-04-25

Supportive wife Penny encourages Leonard to stand up for himself when he wants to be the principal investigator on a new physics study on....

The Inspiration Deprivation

Season 12 Episode 19

Air Date: 2019-04-18

The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown....

The Laureate Accumulation

Season 12 Episode 18

Air Date: 2019-04-04

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side....

The Conference Valuation

Season 12 Episode 17

Air Date: 2019-03-07

Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is in charge of the kids....

The D & D Vortex

Season 12 Episode 16

Air Date: 2019-02-21

When the gang finds out Wil Wheaton hosts a celebrity Dungeons and Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith, deception and betrayal are the path to make it to the one open seat....

The Donation Oscillation

Season 12 Episode 15

Air Date: 2019-02-07

Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa...

The Meteorite Manifestation

Season 12 Episode 14

Air Date: 2019-01-31

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law....

The Confirmation Polarization

Season 12 Episode 13

Air Date: 2019-01-17

When Sheldon and Amy's super asymmetry theory is proven by two physicists, Dr. Pemberton and Dr. Campbell from Chicago, they're thrilled, until they try to kick Amy off the Nobel nomination....

The Propagation Proposition

Season 12 Episode 12

Air Date: 2019-01-10

Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help....

The Paintball Scattering

Season 12 Episode 11

Air Date: 2019-01-03

Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy....

The VCR Illumination

Season 12 Episode 10

Air Date: 2018-12-06

Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon's past inspires him not to give up....

The Citation Negation

Season 12 Episode 9

Air Date: 2018-11-15

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproven....

The Consummation Deviation

Season 12 Episode 8

Air Date: 2018-11-08

Sheldon tries to bond with Amy’s father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler...

The Grant Allocation Derivation

Season 12 Episode 7

Air Date: 2018-11-01

Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money....

The Imitation Perturbation

Season 12 Episode 6

Air Date: 2018-10-25

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party....

The Planetarium Collision

Season 12 Episode 5

Air Date: 2018-10-18

When Amy doesn't have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she's available to work with him even it if means accidentally sabotaging her career in the process....

The Tam Turbulence

Season 12 Episode 4

Air Date: 2018-10-11

When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands....

The Procreation Calculation

Season 12 Episode 3

Air Date: 2018-10-04

The Wolowitzes' life gets complicated when Stuart starts bringing his new girlfriend home....

The Wedding Gift Wormhole

Season 12 Episode 2

Air Date: 2018-09-27

Sheldon and Amy drive themselves crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding....

The Conjugal Configuration

Season 12 Episode 1

Air Date: 2018-09-24

Sheldon and Amy's honeymoon runs aground in New York, while Penny and Leonard discover they are uncomfortably similar to Amy's parents, Mr. and Mrs. Fowler...

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