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The Best Episodes From The Big Bang Theory Season 5 

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Updated October 13, 2018 272 votes 31 voters 24 items

There are so many great episodes of The Big Bang Theory in season 5, but which are your absolute favorite? This list ranks every episode of The Big Bang Theory season 5 from the best to worst, with the help of your votes.

The fifth season of The Big Bang Theory premiered on September 22, 2011 and consisted of 24 episodes. Season 5 of The Big Bang Theory received five Emmy nominations, including again for "Outstanding Comedy Series" and the first for Mayim Bialik as "Outstanding Supporting Actress in a Comedy Series" for her work in the episode "The Shiny Trinket Maneuver."

Which The Big Bang Theory season 5 episode did you like better, "The Rothman Disintegration" or "The Weekend Vortex"? Vote up the best episodes from The Big Bang Theory season 5 that you'd like to see at the top of the list.

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list ordered by
1
The Speckerman Recurrenc... is listed (or ranked) 1 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 11, Season: The Big Bang Theory - Season 5

Original Airing: Dec 08 2011

Leonard must face his fears after being contacted by his high school tormentor.
2
The Skank Reflex Analysi... is listed (or ranked) 2 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 1, Season: The Big Bang Theory - Season 5

Original Airing: Sep 22 2011

Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
3
The Stag Convergence is listed (or ranked) 3 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 22, Season: The Big Bang Theory - Season 5

Original Airing: Apr 26 2012

After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
4
The Werewolf Transformat... is listed (or ranked) 4 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 18, Season: The Big Bang Theory - Season 5

Original Airing: Feb 23 2012

Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.
5
The Flaming Spittoon Acq... is listed (or ranked) 5 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 10, Season: The Big Bang Theory - Season 5

Original Airing: Nov 17 2011

Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.
6
The Good Guy Fluctuation... is listed (or ranked) 6 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 7, Season: The Big Bang Theory - Season 5

Original Airing: Oct 27 2011

A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
7
The Beta Test Initiation... is listed (or ranked) 7 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 14, Season: The Big Bang Theory - Season 5

Original Airing: Jan 26 2012

"The Beta Test Initiation" is the fourteenth episode of the fifth season of the sitcom The Big Bang Theory. The episode premiered on January 26, 2012 in the United States on CBS. In ...more
8
The Recombination Hypoth... is listed (or ranked) 8 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 13, Season: The Big Bang Theory - Season 5

Original Airing: Jan 19 2012

"The Recombination Hypothesis" is the 100th episode of the American sitcom The Big Bang Theory and the 13th episode of the series' fifth season. It premiered on CBS in the United ...more
9
The Ornithophobia Diffus... is listed (or ranked) 9 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 9, Season: The Big Bang Theory - Season 5

Original Airing: Nov 10 2011

Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy ...more
10
The Countdown Reflection... is listed (or ranked) 10 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 24, Season: The Big Bang Theory - Season 5

Original Airing: May 10 2012

Wolowitz makes his final preparations to launch into space
11
The Russian Rocket React... is listed (or ranked) 11 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 5, Season: The Big Bang Theory - Season 5

Original Airing: Oct 13 2011

Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
12
The Weekend Vortex is listed (or ranked) 12 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 19, Season: The Big Bang Theory - Season 5

Original Airing: Mar 08 2012

Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
13
The Wiggly Finger Cataly... is listed (or ranked) 13 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 4, Season: The Big Bang Theory - Season 5

Original Airing: Oct 06 2011

Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
14
The Friendship Contracti... is listed (or ranked) 14 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 15, Season: The Big Bang Theory - Season 5

Original Airing: Feb 02 2012

Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
15
The Hawking Excitation ... is listed (or ranked) 15 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 21, Season: The Big Bang Theory - Season 5

Original Airing: Apr 05 2012

When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
16
The Infestation Hypothes... is listed (or ranked) 16 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 2, Season: The Big Bang Theory - Season 5

Original Airing: Sep 22 2011

A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
17
The Rhinitis Revelation ... is listed (or ranked) 17 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 6, Season: The Big Bang Theory - Season 5

Original Airing: Oct 20 2011

"The Rhinitis Revelation" is the sixth episode of the fifth season of the US sitcom The Big Bang Theory and the 93rd episode of the show overall. It first aired on CBS on October 20,
18
The Shiny Trinket Maneuv... is listed (or ranked) 18 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 12, Season: The Big Bang Theory - Season 5

Original Airing: Jan 12 2012

Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
19
The Pulled Groin Extrapo... is listed (or ranked) 19 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 3, Season: The Big Bang Theory - Season 5

Original Airing: Sep 29 2011

Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
20
The Vacation Solution is listed (or ranked) 20 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 16, Season: The Big Bang Theory - Season 5

Original Airing: Feb 09 2012

When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
21
The Launch Acceleration ... is listed (or ranked) 21 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 23, Season: The Big Bang Theory - Season 5

Original Airing: May 03 2012

When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the
22
The Isolation Permutatio... is listed (or ranked) 22 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 8, Season: The Big Bang Theory - Season 5

Original Airing: Nov 03 2011

Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
23
The Rothman Disintegrati... is listed (or ranked) 23 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 17, Season: The Big Bang Theory - Season 5

Original Airing: Feb 16 2012

Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs it up when Amy is over. When Amy catches ...more
24
The Transporter Malfunct... is listed (or ranked) 24 on the list The Best Episodes From The Big Bang Theory Season 5
Episode: 20, Season: The Big Bang Theory - Season 5

Original Airing: Mar 29 2012

Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after his ...more