S06E09 The Parking Spot Escalation

http://www.imdb.com/title/tt2505340/ The gang is drawn into a fight between Howard and Sheldon over Sheldon's vacant parking spot.

S05E24 The Countdown Reflection

The gang scrambles to provide Howard and Bernadette a wedding before Howard's mission into space.

S05E23 The Launch Acceleration

Howard faces double trouble when NASA moves up his launch and he has to meet Bernadette's father. Some awkward pillow talk by Leonard may change his relationship with Penny.

S05E22 The Stag Convergence

The guys throw Howard a bachelor party, and some embarrassing details about his life get posted on the Internet.

S05E21 The Hawking Excitation

Sheldon uses any and all means to meet his hero, Dr. Stephen Hawking.

S05E20 The Transporter Malfunction

Raj gets quite a surprise when he asks his parents to set him up on a date. Penny buys Leonard and Sheldon a pair of Star Trek keepsake collectibles, not knowing the effect it would have on Sheldon.

S05E19 The Weekend Vortex

Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.

S05E18 The Werewolf Transformation

Sheldon wreaks havoc when he tries to get a haircut from his regular barber, who is ill. Howard runs into a few problems with astronaut training.

S05E17 The Rothman Disintegration

Sheldon battles Barry Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.

S05E16 The Vacation Solution

When the university forces Sheldon to use vacation days, he decides to hang out in Amy's lab. Bernadette wants Howard to sign a prenuptial agreement.

S05E15 The Friendship Contraction

Leonard signs out of his roommate agreement, reducing himself and Sheldon to mere acquaintances, while Howard tries to think of a cool astronaut nickname for himself.

S05E14 The Beta Test Initiation

Leonard and Penny develop a system to insure their dates go smoothly. Raj finally finds a woman he can talk to - the virtual assistant on his mobile phone.

S05E13 The Recombination Hypothesis

Leonard and Penny contemplate reviving their romantic relationship. Sheldon's attempt to order Star Trek memorabilia doesn't go as planned.

S05E12 The Shiny Trinket Maneuver

Penny must help Sheldon work on his relationship with Amy when he trivializes one of her accomplishments. Bernadette's dislike of children bothers Howard.

S05E11 The Speckerman Recurrence

Leonard must confront the man who bullied him in high school, while Penny realizes she did her fair share of tormenting in the past.

S05E10 The Flaming Spittoon Acquisition

When Stuart from the comic book store asks Amy on a date, Sheldon considers having a more serious relationship with her. Meanwhile, the guys become obsessed with a new card game involving Wild West heroes and witches.

S05E09 The Ornithophobia Diffusion

Sheldon must overcome his fear of birds while Leonard and Penny attempt to hang out together strictly as friends.

S05E08 The Isolation Permutation

Amy is hurt when Bernadette and Penny goes bridesmaid dress shopping without her, so she turns to a reluctant Sheldon for comfort.

S05E07 The Good Guy Fluctuation

Sheldon tries to get into the spirit of Halloween by trying to scare the guys after they prank him. A comic book artist is interested in Leonard.

S05E06 The Rhinitis Revelation

Sheldon is upset when his mom comes to visit but refuses to cook for him and attend physics lectures.

S05E05 The Russian Rocket Reaction

Sheldon takes offense when Leonard wants to attend a party with Star Trek's Wil Wheaton and Brent Spiner, and Bernadette tries to block Howard's opportunity to go into outer space.

S05E04 The Wiggly Finger Catalyst

Penny sets up Raj with a deaf friend, not knowing that she's actually a gold digger, and Sheldon decides to let his minor decisions rest on the roll of the dice.

S05E03 The Pulled Groin Extrapolation

While Sheldon stays at home to play with his new train set, Leonard and Amy learn a lot about each other when he goes as her "plus one" to a wedding. Howard and Bernadette spend the weekend with his mother.

S05E02 The Infestation Hypothesis

Sheldon has health issues with Penny's new chair. Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny. Leonard tries to add some spice to his long-distance relationship with Priya.

S05E01The Skank Reflex Analysis

The gang deals with the fallout from Penny and Raj's night together. Amy counsels Penny when she considers moving back to Nebraska due to her failing acting career. Sheldon takes charge of the paintball team.