The Big Bang Theory
Series 5 Episode 14

Leonard and Penny put their relationship through a 'beta test' and report problems they have with each other as 'bugs', while Sheldon and Amy seek internet fame

The Skank Reflex Analysis: Penny worries that she's screwed things up with her friends after her night with Raj

First shown: Thu 3 Nov 2011 | 21 mins

The Infestation Hypothesis: A battle of wills between Sheldon and Penny leaves Amy in the middle

First shown: Thu 10 Nov 2011 | 19 mins

The Pulled Groin Extrapolation: Leonard goes as Amy's date to a colleague's wedding

First shown: Thu 10 Nov 2011 | 19 mins

The Wiggly Finger Catalyst: Raj is upset that he's not in a relationship, so Penny tries to find him the perfect date

First shown: Thu 17 Nov 2011 | 19 mins

The Russian Rocket Reaction: Sheldon's old nemesis Wil Wheaton returns and invites everyone to a house-warming party

First shown: Thu 24 Nov 2011 | 21 mins

The Rhinitis Revelation: Sheldon's mum becomes a firm favourite with his friends - much to Sheldon's annoyance

First shown: Thu 1 Dec 2011 | 21 mins

The Good Guy Fluctuation: The gang play Halloween pranks on Sheldon. Leonard questions his feelings for Priya.

First shown: Thu 8 Dec 2011 | 19 mins

The Isolation Permutation: Amy learns that Penny and Bernadette have been shopping for bridesmaids gowns without her

First shown: Thu 15 Dec 2011 | 20 mins

The Ornithophobia Diffusion: Leonard and Penny attempt to hang out without anybody else around

First shown: Thu 22 Dec 2011 | 20 mins

The Flaming Spittoon Acquisition: Stuart from the comic book shop asks Amy out, so Sheldon asks her to be his girlfriend

First shown: Thu 29 Dec 2011 | 20 mins