...Countdown: The 43 Peculiarity: The guys notice that Sheldon disappears for 20 minutes after lunch every day. Filled with curiosity, they aim to work out what he's been doing. (S6 Ep8/24) [AD,S]
...Countdown: The Hawking Excitation: When Stephen Hawking comes to lecture at the university, Howard is given the task of maintaining his wheelchair, making Sheldon envious. (S5 Ep21/24) [AD,S]
...Countdown: The Robotic Manipulation: Penny tags along to Sheldon's first date with a woman he's been texting for months. Howard finds a new use for a robotic arm. (S4 Ep1/24) [AD,S]
...Countdown: The Lunar Excitation: Raj registers Sheldon for online dating and finds the perfect match: the female version of Sheldon. Penny seduces Leonard while she's drunk. (S3 Ep23/23) [AD,S]
...Countdown: The Panty Pinata Polarization: Sheldon bans Penny from the apartment for numerous minor infractions. Howard and Raj search for the America's Next Top Model house. (S2 Ep7/23) [AD,S]
...Countdown: Pilot: This special stack features a popular episode from each series of the US comedy, starting with the pilot. Penny moves in next door to Leonard and Sheldon. (S1 Ep1/17) [AD,S]