"The Big Bang Theory" airs its final episode on Thursday.
The series and "Roseanne" were the two biggest shows of 2018 based on Nielsen ratings, but both were canceled.
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The series finale of "The Big Bang Theory" airs on Thursday, concluding the longest-running multicamera series of all time.
After 12 seasons, the sitcom was still one of the most popular shows on TV. It was the second-highest-rated series of 2018 according to Nielsen ratings,...
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