"The Plimpton Stimulation"

Sheldon has a female physicist, Dr. Plimpton (Judy Greer) spend the night at the apartment.

  • 4.0 / 5.0
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"The Spaghetti Catalyst"

After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.

"The Wheaton Recurrence"

Sheldon goes up against his nemesis, Wil Wheaton at the bowling alley while Leonard and Penny have their own fight.

  • 3.5 / 5.0
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"The Pants Alternative"

When Sheldon is forced to give an acceptance speech for an award he received, he must overcome his stage freight.

  • 3.5 / 5.0
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"The Precious Fragmentation"

When the guys buy a Lord of the Rings ring from a garage sale, they all begin to covet their precious.

  • 5.0 / 5.0
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"The Excelsior Acquisition"

Sheldon misses his chance to meet comic book creator Stan Lee when he's stuck in traffic court over a ticket that Penny got him.

  • 3.5 / 5.0
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"The Large Hadron Collision"

When Leonard is giving a plus one to go to Switzerland to see the Large Hadron Collider on Valentine's Day, Sheldon tries to convince Leonard to take him over Penny.

  • 4.0 / 5.0
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"The Einstein Approximation"

Sheldon gets a job at the Cheesecake factory to help his solve a theory; Leonard and Wolowitz steal Raj's idea for a double date.

  • 3.5 / 5.0
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"The Bozeman Reaction"

When Leonard and Sheldon's apartment gets robbed, their friends help them devise a security system.

  • 3.5 / 5.0
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"The Psychic Vortex"

Sheldon and Raj attend a university mixer where Raj meets Abby (Danica McKellar); Leonard is upset to find out that Penny believes in psychics.

TBBT Quotes

Mrs. Cooper: Shelly! I'm so glad you're here!
Sheldon: I saw you having naked sex.

Penny: I give up, he's impossible
Sheldon: I can't be impossible, I exist. I believe what you meant to say is, "I give up, he's improbable."