After 12 long years, The Big Bang Theory is coming to an end, making it the longest-running multi-camera sitcom in TV history.

12 years later...
Season 1, Episode 1, "Pilot" vs. Season 12, Episode 23, "The Change Constant."
Season 1, Episode 2, "The Big Bran Hypothesis" vs. Season 12, Episode 23, "The Change Constant."
Season 1, Episode 2, "The Big Bran Hypothesis" vs. Season 12, Episode 22, "The Maternal Conclusion."
Season 1, Episode 3, "The Fuzzy Boots Corollary" vs. Season 12, Episode 17, "The Conference Valuation."
Season 1, Episode 1, "Pilot" vs. Season 12, Episode 22, "The Maternal Conclusion."
Season 3, Episode 10, "The Gorilla Experiment" vs. Season 12, Episode 22, "The Maternal Conclusion."
Season 4, Episode 5, "The Desperation Emanation" vs. Season 12, Episode 22, "The Maternal Conclusion."
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