After 12 long years, The Big Bang Theory is coming to an end, making it the longest-running multi-camera sitcom in TV history.
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In honor of the series finale, here's a look back at the cast:
Kaley Cuoco as Penny
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Season 1, Episode 1, "Pilot" vs. Season 12, Episode 23, "The Change Constant."
Jim Parsons as Sheldon Cooper
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Season 1, Episode 2, "The Big Bran Hypothesis" vs. Season 12, Episode 23, "The Change Constant."
Johnny Galecki as Leonard Hofstadter
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Season 1, Episode 2, "The Big Bran Hypothesis" vs. Season 12, Episode 22, "The Maternal Conclusion."
Kunal Nayyar as Rajesh Koothrappali
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Season 1, Episode 3, "The Fuzzy Boots Corollary" vs. Season 12, Episode 17, "The Conference Valuation."
Simon Helberg as Howard Wolowitz
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Season 1, Episode 1, "Pilot" vs. Season 12, Episode 22, "The Maternal Conclusion."
Melissa Rauch as Bernadette Rostenkowski-Wolowitz
Michael Yarish / WARNER BROS.
Season 3, Episode 10, "The Gorilla Experiment" vs. Season 12, Episode 22, "The Maternal Conclusion."
Mayim Bialik as Amy Farrah Fowler
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Season 4, Episode 5, "The Desperation Emanation" vs. Season 12, Episode 22, "The Maternal Conclusion."
The end of an era!!
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