Here's what happened in The Big Bang Theory's bittersweet finale that fans are praising as "perfect"
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![PHOTOS] 'Big Bang Theory' Final Episode Taping — Last Season | TVLine](https://tvline.com/wp-content/uploads/2018/09/the-big-bang-theory-season-12-episode-21-13.jpg "PHOTOS] 'Big Bang Theory' Final Episode Taping — Last Season | TVLine")
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![Amazon.com: The Big Bang Theory: Season 9 [DVD] : Chuck Lorre, Steven Molaro, Bill Prady, Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik, Melissa Rauch: Movies & TV](https://m.media-amazon.com/images/I/81ksNXITStL._AC_UF894,1000_QL80_.jpg "Amazon.com: The Big Bang Theory: Season 9 [DVD] : Chuck Lorre, Steven Molaro, Bill Prady, Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik, Melissa Rauch: Movies & TV")
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The Big Bang Theory - Rotten Tomatoes
