6. The Big Bang Theory
Average viewership during the run: 14.9 million.
Ranking based on average viewership during the year: 3
Number of seasons: 8
Ranking based on number of seasons: Joint sixth
Currently the most popular show on television, The Big Bang Theory is chalk full of jokes that will leave you in stiches. While it may only have 8 seasons to its name, that number is only going to grow since it has been renewed for a ninth season.
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