The Gyroscopic Collapse: Raj makes new living arrangements. The guys' gyroscope project spins out of control as the special stack charting the comedy's best moments concludes. (S10 Ep23/24) [AD,S]
The Cognition Regeneration: Leonard isn't thrilled when he finds out Penny is considering taking a new job that has been offered by her ex-boyfriend Zack. (S10 Ep22/24) [AD,S]
The Opening Night Excitation: Leonard, Howard and Raj have an extra ticket for the Star Wars movie premiere, but can't decide who they should give it to. (S9 Ep11/24) [AD,S]
The Locomotive Manipulation: Love is in the air when Amy manages to convince Sheldon to join her for a romantic train trip to Napa Valley to celebrate Valentine's Day. (S7 Ep15/24) [AD,S]
The Thanksgiving Decoupling: Howard takes the gang to his mother's house for Thanksgiving to protect himself from his grumpy father-in-law, who has also been invited. (S7 Ep9/24) [AD,S]
The Scavenger Vortex: Raj organises an epic and demanding scavenger hunt for the group of friends, designed to test their scientific knowledge and common sense. (S7 Ep3/24) [AD,S]
The Love Spell Potential: When the girls' trip to Las Vegas falls through, the guys invite them to a Dungeons and Dragons night that changes Sheldon and Amy's relationship. (S6 Ep23/24) [AD,S]
The 43 Peculiarity: The guys notice that Sheldon disappears for 20 minutes after lunch every day. Filled with curiosity, they attempt to work out what he's been doing. (S6 Ep8/24) [AD,S]
The Countdown Reflection: Bernadette decides that she wants to get married to Howard before his Nasa space mission takes place, but can they get organised in time? (S5 Ep24/24) [AD,S]
The Prestidigitation Approximation: Leonard must choose between his new girlfriend Priya and his friendship with Penny. Howard drives Sheldon crazy with a magic trick. (S4 Ep18/24) [AD,S]
The Staircase Implementation: This episode flashes back to the start of Sheldon and Leonard's friendship seven years earlier and explains the roommate agreement. (S3 Ep22/23) [AD,S]
The Pants Alternative: Sheldon has been awarded a prestigious prize but is scared of collecting the award at a ceremony because he knows he'll have to make a speech. (S3 Ep18/23) [AD,S]
The Precious Fragmentation: The gang squabble over a ring they think was used in The Lord of the Rings movies as the special stack charting the comedy's best moments continues. (S3 Ep17/23) [AD,S]
The Terminator Decoupling: A special stack of episodes charting some of the best moments from the comedy series. Leonard, Sheldon, Howard and Raj take a train to San Francisco. (S2 Ep17/23) [AD,S]