The Big Bang Theory/The Griffin Equivalency

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The Griffin Equivalency
Season 2, Episode 4
Airdate October 13, 2008
Production Number 3T7354
Teleplay by Stephen Engel &
Tim Doyle
Story by Bill Prady &
Chuck Lorre
Directed by Mark Cendrowski
← 2x03
The Barbarian Sublimation
2x05 →
The Euclid Alternative
The Big Bang TheorySeason Two
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The Griffin Equivalency is the fourth episode of the second season of The Big Bang Theory, and the twenty-first episode overall.

Starring: Johnny Galecki (Leonard Hofstadter), Jim Parsons (Sheldon Cooper), Kaley Cuoco (Penny), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Rajesh Koothrappali)

Special Appearance by: Charlie Sheen (Himself)

Guest Starring: Mark Harelik (Dr. Gablehauser), Brian George (Dr. Koothrappali), Alice Amter (Mrs. Koothrappali)


Plot Overview


Arc Advancement





The Show

Behind the Scenes

Allusions and References

Memorable Moments