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Looking to watch The Big Bang Theory Season 4 Episode 12 online? TV Fanatic is your destination for every paid and free streaming option of the The Big Bang Theory S4E12 full episode from 2 affiliates.

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Episode Details

The Big Bang Theory Season 4 Episode 12: "The Bus Pants Utilization"

Leonard gets an idea for a smart phone application on this episode. How does that go? Find out now.