The Big Bang Theory

Penny worries that she's screwed things up permanently with her friends after her night with Raj, while Sheldon takes command of the paintball team.

Leonard and Amy get to know each other better at a co-worker's wedding. Howard and Bernadette spend the weekend with Mrs. Wolowitz!

Raj is upset he's the only one of the four guys who's not in a relationship, so Penny sets out to find the perfect date.

Sheldon and Leonard get invited to a housewarming party at Wil Wheaton's house. Howard gets an out-of-this-world opportunity!

Craving a little motherly love, Sheldon competes with the gang for his mother's attention when she comes to visit.

A cute comic book artist tests Leonard's relationship with Priya, while Sheldon, getting into the Halloween spirit, tries to scare the guys.

Amy is heartbroken when Bernadette and Penny go shopping for wedding dresses without her.

Can friends with benefits still be friends without? Leonard and Penny try hanging out alone, while Sheldon must overcome his fear of birds.

Sheldon becomes jealous and considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.

Leonard must face his fears after being contacted by his high school tormentor, while Penny realises that she might have been a bully herself.

Sheldon gets in trouble with Amy, and it's up to Penny to teach him how to be a better boyfriend. Howard deals with Bernadette's dislike of children.

Everything might change when Leonard offers Penny a spur of the moment invitation to a romantic dinner for two on the 100th episode of the series.