"The Infestation Hypothesis"

Amy is caught in the middle this week, as Sheldon and Penny fight. Leonard, meanwhile, tries to spice things up with Priya.

  • 4.5 / 5.0
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"The Skank Reflex Analysis"

The Big Bang Theory is back! On the premiere, the gang deals with Penny and Raj actually sleeping together.

  • 4.5 / 5.0
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"The Roommate Transmogrification"

Raj moves in with Sheldon on the fourth season finale of The Big Bang Theory. This takes Penny by surprise.

  • 4.0 / 5.0
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"The Engagement Reaction"

When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.

  • 3.0 / 5.0
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"The Wildebeest Implementation"

Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.

  • 4.0 / 5.0
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"The Agreement Dissection"

When Priya uses her lawyer skills to pick apart the roommate agreement, the girls take Sheldon dancing on this episode of TBBT.

  • 4.5 / 5.0
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"The Herb Garden Germination"

Sheldon and Amy spread gossip this week. Elsewhere, Howard takes a big step in his relationship with Bernadette.

  • 4.0 / 5.0
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"The Zarnecki Incursion"

Someone has the gall to hack into Sheldon's online game account this week. The guy go on a search to find out who would dare do such a thing.

  • 4.0 / 5.0
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"The Prestidigitation Approximation"

Wolowitz baffles Sheldon this week with a magic trick. Elsewhere, Leonard realizes that there's a problem with him dating Priya.

  • 3.5 / 5.0
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"The Toast Derivation"

Sheldon struggles with a realization on this episode: Leonard who is actually the center of the social group.

  • 3.5 / 5.0
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TBBT Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

Bernadette: I had a plan. I kept leaving Dove bar wrappers around to explain any weight gain.
Amy: Where did you get empty Dove bar wrappers?
Bernadette: From all the DOVE BARS I ATE. I'M PREGNANT. Try to keep up!