The Big Bang Theory

Flaming Spittoon Acquisition. 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. S5, Ep10

Leonard must face his fears after being contacted by his high school tormentor, while Penny realises that she might have been a bully herself. S5, Ep11

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. S5, Ep12

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. S5, Ep13

Leonard and Penny experiment with dating again by 'beta testing' their relationship. Raj develops a weird bond with his phone's virtual assistant. S5, Ep14

Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Howard tries to pick his astronaut nickname. S5, Ep15

When Sheldon is forced to take a vacation by the university, he goes to work with Amy in her neurobiology lab. S5, Ep16

When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy. S5, Ep17

A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space. S5, Ep18

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party. S5, Ep19

It's a dream come true for Sheldon when he has a close encounter with his hero, Mr. Spock -legendary sci-fi icon Leonard Nimoy. S5, Ep20

When Wolowitz gets to work with world-renowned scientist, Stephen Hawking, Sheldon is willing to do anything to meet his hero. S5, Ep21

Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online. S5, Ep22

When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad. S5, Ep23

When Howard and Bernadette decide they want to be married before his NASA space launch, the gang rushes to put on a wedding. S5, Ep24