The Best Episodes of The Big Bang Theory Season 6

Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.

Director: Mark Cendrowski

Writer: N/A

When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Howard in trouble.

Director: Mark Cendrowski

Writer: N/A

As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.

Director: Mark Cendrowski

Writer: N/A

When Wolowitz returns from space, he doesn’t get the hero’s welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.

Director: Mark Cendrowski

Writer: N/A

When the University reassigns Sheldon’s parking spot to Wolowitz, their fight affects the whole gang.

Director: Peter Chakos

Writer: N/A

A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.

Director: Mark Cendrowski

Writer: N/A

Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.

Director: Anthony Joseph Rich

Writer: N/A

A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.

Director: Anthony Joseph Rich

Writer: N/A

The gang celebrates Halloween at Stuart’s comic book store. Meanwhile, Leonard seduces Penny with science.

Director: Mark Cendrowski

Writer: N/A

When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.

Director: Mark Cendrowski

Writer: N/A

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

Director: Mark Cendrowski

Writer: N/A

Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.

Director: Mark Cendrowski

Writer: N/A

Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.

Director: Mark Cendrowski

Writer: N/A

Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.

Director: Mark Cendrowski

Writer: N/A

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college.

Director: Mark Cendrowski

Writer: N/A

During a Dungeons and Dragons game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Raj.

Director: Mark Cendrowski

Writer: N/A

The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.

Director: Mark Cendrowski

Writer: N/A

Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.

Director: Mark Cendrowski

Writer: N/A

Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.

Director: Mark Cendrowski

Writer: N/A

When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop. Raj and Lucy's relationship comes to a crossroad.

Director: Mark Cendrowski

Writer: N/A

With his friends on dates, Raj must face his loneliness. Also, Wolowitz is caught in an argument between Bernadette and his mom, even while he’s in space.

Director: Mark Cendrowski

Writer: N/A

When Sheldon learns that Penny is thinking about breaking up with Leonard, he tries to intervene. Meanwhile, in space, the other astronauts pick on Howard.

Director: Mark Cendrowski

Writer: N/A

Wolowitz struggles with moving out of his mother’s house. Meanwhile, Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.

Director: Mark Cendrowski

Writer: N/A

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

Director: Mark Cendrowski

Writer: N/A