Login or register  

Season 6

112 :06x01 - The Date Night Variable

With everyone paired up, Raj is left alone and imposes himself on others. Howard cannot escape the two women in his life, even while on the space station.
Guest Stars: Carol Ann Susi as Mrs. Wolowitz | Pavel Lychnikoff as Dimitri
Director: Mark Cendrowski

113 :06x02 - The Decoupling Fluctuation

Penny confides to Amy and Bernadette that she is unsure about staying with Leonard, and when Sheldon inevitably learns about it, he takes matters into his own hands. Howard gets pranked as the new guy in space.
Guest Stars: Pavel Lychnikoff as Dimitri |
Co-Guest Stars: Michael J. Massimino as Himself
Director: Mark Cendrowski

114 :06x03 - The Higgs Boson Observation

Sheldon hires a young woman to be his assistant, which initially makes Amy jealous, then later Penny finds cause for concern. On the space station, Howard starts to freak out when he learns his return to Earth will be delayed.
Guest Stars: Pavel Lychnikoff as Dimitri | Margo Harshman as Alex (Alex Jensen)
Director: Mark Cendrowski

115 :06x04 - The Re-Entry Minimization

Howard is home, but on his first night back Bernadette gets sick so he decides to visit his friends. His reception is not what he expected. Game Night with Sheldon, Leonard, Penny and Amy takes a competitive turn when the girls take on the guys.
Guest Stars: Carol Ann Susi as Mrs. Wolowitz | Pavel Lychnikoff as Dimitri | Ken Lerner as Dr. Schneider | Jan Hoag as Lilian | John Mendoza as Chauffeur |
Co-Guest Stars: Michael J. Massimino as Himself |
Uncredited: Howie Mandel as Himself
Director: Mark Cendrowski
Songs: Elton John -- Rocket Man

116 :06x05 - The Holographic Excitation

Raj and Stuart throw a Halloween bash at the comic book store. Howard is upset when everyone tires of his stories about life on the space station. Leonard shows Penny his laboratory and is surprised by her reaction.
Special Guest Stars: Buzz Aldrin as Himself (Special Appearance by) |
Co-Guest Stars: Janelle Giumarra as Claire (as Janelle Marra)
Director: Mark Cendrowski

117 :06x06 - The Extract Obliteration

Penny reveals that she is taking a class at the local community college, but insists it is no big deal. Sheldon plays an Internet game with his idol, Stephen Hawking, then frets when Hawking stops playing.
Guest Stars: Stephen Hawking as Himself
Director: Mark Cendrowski

118 :06x07 - The Habitation Configuration

Bernadette puts her foot down about Howard moving out of his mom's house. Sheldon is perplexed with the enmity between Amy and his friend Wil Wheaton and has no clue how to fix it.
Special Guest Stars: Wil Wheaton as Himself (Special Appearance by) | LeVar Burton as Himself |
Guest Stars: Carol Ann Susi as Mrs. Wolowitz
Director: Mark Cendrowski

119 :06x08 - The 43 Peculiarity

Howard is curious why Sheldon disappears every day at 2:45 and asks Raj to help him discover the secret. Penny's new school partner causes Leonard to be jealous.
Guest Stars: Margo Harshman as Alex (Alex Jensen) | Ryan Cartwright as Cole
Director: Mark Cendrowski

120 :06x09 - The Parking Spot Escalation

The University decides to reassign Sheldon's unused parking space to the newly popular Howard, a move that Sheldon feels is a slap in the face to his importance. This starts a feud between the two friends that spills over to their ladies, and Penny pays the price.
Guest Stars: William Stanford Davis as Dry Cleaner
Director: Peter Chakos

121 :06x10 - The Fish Guts Displacement

When Amy gets sick, Sheldon is required to take care of her and she milks it for all it's worth. Bernadette arranges for Howard and her father to bond via a fishing trip.
Guest Stars: Casey Sander as Mr. Rostenkowski (Mike) | Meagen Fay as Mrs. Rostenkowski
Director: Mark Cendrowski
Songs: Katrina & The Waves -- Walking on Sunshine

122 :06x11 - The Santa Simulation

Leonard leads the boys on a Christmasy version of Dungeons and Dragons, while Raj joins the girls on their night out and they try to find him a girl.
Guest Stars: Dakin Matthews as Santa
Director: Mark Cendrowski

123 :06x12 - The Egg Salad Equivalency

Sheldon manages to put his foot in his mouth and ends up being accused of sexual harassment. In typical fashion, he throws his friends under the bus too.
Special Guest Stars: Regina King as Mrs. Davis |
Guest Stars: Margo Harshman as Alex (Alex Jensen)
Director: Mark Cendrowski

124 :06x13 - The Bakersfield Expedition

The guys head out to a comic book convention and get stranded in full costume. The girls decide to try to understand their men and end up in a heated debate over a comic book character.
Guest Stars: Matt Battaglia as Officer Reynolds | Angela Sargeant as Lana |
Co-Guest Stars: Craig Gellis as Car Thief #1 | Frank Alvarez as Car Thief #2 | Rick Gifford as Guy |
Uncredited: Ian Scott Rudolph as Captain Sweatpants
Director: Mark Cendrowski

125 :06x14 - The Cooper/Kripke Inversion

After being forced to team up with Barry Kripke by management, Sheldon is dismayed when he discovers his work is not up to par with Kripke's. Howard and Raj spare no expense to get action figures that look like themselves.
Guest Stars: John Ross Bowie as Barry Kripke
Director: Mark Cendrowski

126 :06x15 - The Spoiler Alert Segmentation

Leonard finally has enough of Sheldon and moves out, to Penny's distress. Amy takes advantage of Sheldon's need for a new roommate, to Sheldon's distress. While Howard is away, Raj agrees to look in on Mrs. Wolowitz, to his distress!
Guest Stars: Carol Ann Susi as Mrs. Wolowitz
Director: Mark Cendrowski

127 :06x16 - The Tangible Affection Proof

The three couples celebrate Valentine's day in their own way, with little success while Raj and Stuart throw a party for their unattached friends.
Guest Stars: Kevin Sussman as Stuart | Margo Harshman as Alex (Alex Jensen) | Josh Brener as Dale | Kate Micucci as Lucy |
Co-Guest Stars: Briana Cuoco as Gretchen
Director: Mark Cendrowski

128 :06x17 - The Monster Isolation

When Raj gets dumped again, he decides to never leave his apartment or have anything to do with girls. Penny uses her acting skills to help Sheldon with his "Fun With Flags" videos.
Guest Stars: Kevin Sussman as Stuart | Kate Micucci as Lucy |
Co-Guest Stars: Riccardo Lebron as Tom
Director: Mark Cendrowski

129 :06x18 - The Contractual Obligation Implementation

While Leonard, Sheldon, and Howard try to motivate middle school girls to pursue a career in science, the ladies play hooky and go to Disneyland. Raj has a first date with Lucy.
Guest Stars: Kate Micucci as Lucy | Brian Posehn as Bert | Piper MacKenzie Harris as Girl #1 |
Co-Guest Stars: Diamond White as Girl #2 | Dawson Fletcher as Justin
Director: Mark Cendrowski

130 :06x19 - The Closet Reconfiguration

Howard and Bernadette trick Sheldon into organizing their closet where he finds an unopened letter from Howard's father. Howard then struggles whether or not to read it.
Director: Anthony Rich

131 :06x20 - The Tenure Turbulence

A tenured position becomes available at the University and Leonard, Sheldon and Raj all decide to apply, each with their own unique style of currying favor.
Special Guest Stars: Regina King as Mrs. Davis |
Guest Stars: John Ross Bowie as Barry Kripke
Director: Mark Cendrowski

132 :06x21 - The Closure Alternative

Raj's curiosity about his new love interest leads him to discover something to make him change the impression he makes on people. Meanwhile Penny worries that she lacks passion about anything and Amy tries to cure Sheldon of his completion compulsion.
Guest Stars: Kate Micucci as Lucy
Director: Mark Cendrowski

133 :06x22 - The Proton Resurgence

Sheldon learns that his childhood television idol, Professor Proton, is still alive and hiring himself out for parties, so of course Sheldon hires him to perform. Raj is away for the weekend so he asks Howard and Bernadette to look after his dog, with the expected result.
Special Guest Stars: Bob Newhart as Arthur (Professor Proton) |
Guest Stars: Troy Winbush as Paramedic
Director: Mark Cendrowski
Songs: Jim Parsons -- Soft Kitty

134 :06x23 - The Love Spell Potential

The girls join the boys in a game of Dungeons & Dragons after their trip to Las Vegas falls through. Raj and Lucy continue their dating adventures and Raj pushes Lucy to confront one of her greatest fears.
Guest Stars: Kate Micucci as Lucy | David Trice as Waiter
Director: Anthony Rich

135 :06x24 - The Bon Voyage Reaction

Leonard gets an opportunity to work with Dr. Stephen Hawking, but the downside is it will mean being away for up to four months. Both Penny and Sheldon are affected tremendously and both try to come to terms with their feelings while still supporting Leonard. Raj risks everything with Lucy when he pushes her too hard and too fast.
Guest Stars: Kate Micucci as Lucy
Director: Mark Cendrowski
Warning: The Big Bang Theory guide may contain spoilers
Classification: Scripted
Genre: Comedy
Status: Returning Series
Network: CBS ( USA)
Airs: Thursdays at 08:00 pm
Runtime: 30 Minutes
Premiere: September 24, 2007
Episode Order: 24
This guide is currently edited by:
Pentar (Challenge)

The Loose Women Welcome Penny Lancaster to the Panel

Penny Lancaster made her 'Loose Women' debut this afternoon on itv, making her..

Celebrity Big Brother - Winner Revealed

Emma Willis is back to present the live final of the latest series of Celebrity Big..

Downton Abbey - Penelope Wilton Interview

  Whilst attending the official press launch for the new series, I was able to catch up..