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The Big Bang Theory S5E2 — The Infestation Hypothesis
8.0
The Big Bang Theory•Season 5•Episode 2

The Infestation Hypothesis

8.0/10 · 4,557 votesSep 22, 201120 min

Ranked #11 of 24 in Season 5•+0.1 vs season avg

Discussion

A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.

Directed byMark Cendrowski
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Season 5 Episodes24

The Skank Reflex Analysis stillE1 8.0

The Skank Reflex Analysis

The Infestation Hypothesis stillE2 8.0Now viewing

The Infestation Hypothesis

The Pulled Groin Extrapolation stillE3 7.6

The Pulled Groin Extrapolation

The Wiggly Finger Catalyst stillE4 7.8

The Wiggly Finger Catalyst

The Russian Rocket Reaction stillE5 8.0

The Russian Rocket Reaction

The Rhinitis Revelation stillE6 7.5

The Rhinitis Revelation

The Good Guy Fluctuation stillE7 8.5

The Good Guy Fluctuation

The Isolation Permutation stillE8 7.6

The Isolation Permutation

The Ornithophobia Diffusion stillE9 8.1

The Ornithophobia Diffusion

The Flaming Spittoon Acquisition stillE10 7.9

The Flaming Spittoon Acquisition

The Speckerman Recurrence stillE11 7.2

The Speckerman Recurrence

The Shiny Trinket Maneuver stillE12 7.6

The Shiny Trinket Maneuver

The Recombination Hypothesis stillE13 8.1

The Recombination Hypothesis

The Beta Test Initiation stillE14 8.2

The Beta Test Initiation

The Friendship Contraction stillE15 7.7

The Friendship Contraction

The Vacation Solution stillE16 7.5

The Vacation Solution

The Rothman Disintegration stillE17 7.7

The Rothman Disintegration

The Werewolf Transformation stillE18 8.2

The Werewolf Transformation

The Weekend Vortex stillE19 8.1

The Weekend Vortex

The Transporter Malfunction stillE20 8.0

The Transporter Malfunction

The Hawking Excitation stillE21 8.5

The Hawking Excitation

The Stag Convergence stillE22 7.7

The Stag Convergence

The Launch Acceleration stillE23 8.1

The Launch Acceleration

The Countdown Reflection stillE24 8.5

The Countdown Reflection

Cast7

Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Kaley Cuoco

Penny

Simon Helberg

Simon Helberg

Howard Wolowitz

Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Melissa Rauch

Melissa Rauch

Bernadette Rostenkowski

Mayim Bialik

Mayim Bialik

Amy Farrah Fowler

Crew8

Mark Cendrowski

Mark Cendrowski

Director

Jim Reynolds

Jim Reynolds

Teleplay

Steven Molaro

Steven Molaro

Story

Maria Ferrari

Maria Ferrari

Story

Steve Holland

Steve Holland

Teleplay

Bill Prady

Bill Prady

Story

Chuck Lorre

Chuck Lorre

Teleplay

F

Faye Oshima Belyeu

Unit Production Manager

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Episode Summary

"The Infestation Hypothesis" is episode 2 of The Big Bang Theory season 5. It scored 8.0/10 from 4,557 votes, ranking #11 of 24 episodes this season (season average 7.9). Directed by Mark Cendrowski, it aired on September 22, 2011.

Next: E3 · The Pulled Groin ExtrapolationBest of Season 5