While "The Big Bang Theory" creators tweaked the cast's appearances over the 12 seasons, they used one prop for Kaley Cuoco's ...
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The single Big Bang Theory change that completely upended the show
The Big Bang Theory is much-loved for its fantastic ensemble, but two key cast members were a little late to the party.
The Big Bang Theory introduced many characters over the years, but some minor ones are barely remembered by fans.
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