Season 6

Whether on or above Earth, hilarity is outrageously universal in TV's most popular comedy featuring four forward-thinking but socially backward geniuses. Fun discoveries multiply: Leonard learns jealousy is bad for a relationship (with Penny) but science is good for seduction (of Penny). Howard finds life in the International Space Station life is no escape from terrestrial turmoil between his mom and his new wife Bernadette. Raj meets someone special who may be a good match, if he can keep her from fleeing mid-date. And then there's Sheldon. He learns what not to say after facing harassment charges or competing for tenure at work and how Dungeons & Dragons can be the icebreaker his relationship with Amy needs.

Season episodes list 6

S06E01

S06E01 : The Date Night Variable 7.78/10 (aired on 09/27/2012)

Raj faces his loneliness when his friends are out on dates; while in space, Wolowitz gets drawn…
S06E02

S06E02 : The Decoupling Fluctuation 7.79/10 (aired on 10/04/2012)

Sheldon tries to intervene when he learns that Penny is thinking about breaking up with Leonard;…
S06E03

S06E03 : The Higgs Boson Observation 8.06/10 (aired on 10/11/2012)

Amy feels threatened by Sheldon's new assistant; Wolowitz starts to feel the pressures of being in…
S06E04

S06E04 : The Re-Entry Minimization 8.32/10 (aired on 10/18/2012)

Wolowitz's return from space isn't all he expected; game night becomes a gender war.
S06E05

S06E05 : The Holographic Excitation 8.13/10 (aired on 10/25/2012)

The gang heads to Stuart's comic book store to celebrate Halloween; Leonard uses science to seduce…
S06E06

S06E06 : The Extract Obliteration 7.96/10 (aired on 11/01/2012)

A game threatens Sheldon's relationship with Stephen Hawking; Penny secretly signs up for a college…
S06E07

S06E07 : The Habitation Configuration 7.87/10 (aired on 11/08/2012)

Bernadette wants Wolowitz to move out of his mom's house; Sheldon is caught in the middle of Amy…
S06E08

S06E08 : The 43 Peculiarity 8.52/10 (aired on 11/15/2012)

Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises…
S06E09

S06E09 : The Parking Spot Escalation 8.33/10 (aired on 11/29/2012)

Sheldon and Wolowitz's fight over a parking spot at the university impacts the whole gang.
S06E10

S06E10 : The Fish Guts Displacement 8.18/10 (aired on 12/06/2012)

When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan…
S06E11

S06E11 : The Santa Simulation 7.97/10 (aired on 12/13/2012)

During a game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for…
S06E12

S06E12 : The Egg Salad Equivalency 8.54/10 (aired on 01/03/2013)

When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Wolowitz in…
S06E13

S06E13 : The Bakersfield Expedition 8.44/10 (aired on 01/10/2013)

As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to…
S06E14

S06E14 : The Cooper/Kripke Inversion 7.98/10 (aired on 01/31/2013)

Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj…
S06E15

S06E15 : The Spoiler Alert Segmentation 8.32/10 (aired on 02/07/2013)

A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is…
S06E16

S06E16 : The Tangible Affection Proof 8.06/10 (aired on 02/14/2013)

The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj…
S06E17

S06E17 : The Monster Isolation 7.8/10 (aired on 02/21/2013)

After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress…
S06E18

S06E18 : The Contractual Obligation Implementation 7.89/10 (aired on 03/07/2013)

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a…
S06E19

S06E19 : The Closet Reconfiguration 8.16/10 (aired on 03/14/2013)

Howard considers whether or not he should open a letter from his father; Penny and Leonard host a…
S06E20

S06E20 : The Tenure Turbulence 8.07/10 (aired on 04/04/2013)

The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.
S06E21

S06E21 : The Closure Alternative 8.08/10 (aired on 04/25/2013)

Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV…
S06E22

S06E22 : The Proton Resurgence 7.97/10 (aired on 05/02/2013)

Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform;…
S06E23

S06E23 : The Love Spell Potential 8.15/10 (aired on 05/09/2013)

Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons"; Lucy…
S06E24

S06E24 : The Bon Voyage Reaction 7.88/10 (aired on 05/16/2013)

When Leonard is considered for an exciting research opportunity, Sheldon becomes jealous and tries…