The Big Bang Theory

The Work Song Nanocluster - S2-E18

Trivia: After Sheldon mentions a molecular sieve, they go over to 4a, their apartment. 4a is a kind of molecular sieve.

The Bath Item Gift Hypothesis - S2-E11

Trivia: Kaley Cuoco's favorite moment of Penny's is when Sheldon hugs her after receiving the napkin signed by Leonard Nimoy.

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