The Big Bang Theory Season 9

"The Convergence Convergence"

On The Big Bang Theory Season 9 Episode 24, it's chaos when Leonard's recently divorced parents and Sheldon's devoutly religious mother come to visit.

  • 4.2 / 5.0
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"The Line Substitution Solution"

On The Big Bang Theory Season 9 Episode 23, Penny struggles to make a connection with Leonard's mother while Sheldon hires Stuart to spend the day with Amy.

  • 4.0 / 5.0
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"The Fermentation Bifurcation"

On The Big Bang Theory Season 9 Episode 22, the gang runs into Penny's ex-boyfriend at a wine tasting event while Sheldon stays behind with pregnant Bernadette.

  • 4.0 / 5.0
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"The Viewing Party Combustion"

On The Big Bang Theory Season 9 Episode 21, an argument between Leonard and Sheldon becomes a heated fight during a get-together with friends taking sides.

  • 4.2 / 5.0
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"The Big Bear Precipitation"

On The Big Bang Theory Season 9 Episode 20, Raj goes overboard with the pregnancy presents while Sheldon reveals a secret about Leonard on a trip to the cabin.

  • 4.0 / 5.0
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"The Solder Excursion Diversion"

On The Big Bang Theory Season 9 Episode 19, Koothrappali sells out Leonard and Wolowitz when they lie to their wives so they can attend a screening of a movie.

  • 4.0 / 5.0
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"The Application Deterioration"

On The Big Bang Theory Season 9 Episode 18, Howard has doubts about a legal partnership with Leonard and Sheldon concerning the infinite persistence gyroscope.

  • 3.8 / 5.0
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"The Celebration Experimentation"

On The Big Bang Theory Season 9 Episode 17, Sheldon gets a surprise guest when the gang celebrate his birthday. Adam West guest stars in this episode.

  • 4.0 / 5.0
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"The Positive Negative Reaction"

On The Big Bang Theory Season 9 Episode 16, Wolowitz freaks out when Bernadette announces she's pregnant and the gang celebratew with karaoke.

  • 4.7 / 5.0
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"The Valentino Submergence"

On The Big Bang Theory Season 9 Episode 15, Howard and Bernadette find a surprise in their hot tub, while Sheldon and Amy host a Valenine's Day show.

  • 4.0 / 5.0
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"The Meemaw Materialization"

On The Big Bang Theory Season 9 Episode 14, Sheldon happiness over having Meemaw visit is dampened when she begins to butt heads with Amy.

  • 4.5 / 5.0
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"The Empathy Optimization"

On The Big Bang Theory Season 9 Episode 13, the gang treat themselves to a Sheldon-less weekend after having to deal with an ill Sheldon for a week.

  • 4.0 / 5.0
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"The Sales Call Sublimation"

On The Big Bang Theory Season 9 Episode 12, Sheldon and Koothrappali collaborate while Wolowitz and Bernadette have shocking feelings when Stuart moves out.

  • 4.5 / 5.0
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"The Opening Night Excitation"

On The Big Bang Theory Season 9 Episode 11, after dating for years, Sheldon and Amy spend the night together while the boys end up with an extra Star Wars ticket.

  • 5.0 / 5.0
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"The Earworm Reverberation"

On The Big Bang Theory Season 9 Episode 10, Sheldon has a revelation when he realizes why a song was stuck in his head while Amy invites Dave to dinner.

  • 4.2 / 5.0
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"The Platonic Permutation"

On The Big Bang Theory Season 9 Episode 9, Sheldon and Amy spend Thanksgiving together now that they're just friends and the gang volunteers at a soup kitchen.

  • 4.4 / 5.0
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"The Mystery Date Observation"

On The Big Bang Theory Season 9 Episode 8, Howard and Raj post an online advertisement to find Sheldon a new girlfriend, and Amy goes on a date.

  • 4.3 / 5.0
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"The Spock Resonance"

On The Big Bang Theory Season 9 Episode 7, Sheldon struggles to hide his emotions about his break-up while being interviewed for a documentary about Spock.

  • 4.0 / 5.0
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"The Helium Insufficiency"

On The Big Bang Theory Season 9 Episode 6, Sheldon and Leonard venture into the black market when a helium shortage impacts one of their experiments.

  • 4.2 / 5.0
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"The Perspiration Implementation"

On The Big Bang Theory Season 9 Episode 5, the guys take a fencing lesson from Barry Kripke and Sheldon must respond when Kripke expresses interest in Amy.

  • 4.0 / 5.0
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"The 2003 Approximation"

On The Big Bang Theory Season 9 Episode 4, with his living arrangements about to change, Sheldon reverts to his 2003 self, before he met Leonard or Penny.

  • 4.5 / 5.0
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"The Bachelor Party Corrosion"

On The Big Bang Theory Season 9 Episode 3, the girls force Penny to tell her family that she eloped while the boys are put to the test by a flat tire.

  • 3.5 / 5.0
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"The Separation Oscillation"

On The Big Bang Theory Season 9 Episode 2, Sheldon films a special episode of "Fun With Flags" after his breakup with Amy, and Leonard tries to ease Penny's mind.

  • 3.5 / 5.0
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"The Matrimonial Momentum"

On The Big Bang Theory Season 9 Episode 1, Penny struggles with Leonard's confession, and Sheldon doesn't know how to act after Amy pushes pause on their relationship.

  • 4.0 / 5.0
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Show:
The Big Bang Theory
Season:
9
Air Dates:
to
Total Episodes:
24

The Big Bang Theory Season 9 Quotes

I've loved you since the moment we met, and I'll love you until the end of time.

Leonard

Some important new information has come to light. Women are the worst. I thought it was paper cuts, but I was wrong. No piece of paper ever cut me this deep.

Sheldon