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Here's what happened in The Big Bang Theory's bittersweet finale that fans are praising as perfect
The Big Bang Theory” Series Finale Is Two-Parter, Airing One Night – TVLine
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The Big Bang Theory' Ending: Final Season 12, Series Finale 'Spoilers' – TVLine
The Big Bang Theory: Fans react to emotional final episode: 'The ending was beautiful', The Independent
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Big Bang Theory Ending: What Happened in the Series Finale? - IMDb