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Big Bang Theory plot hole: Did you spot Penny father error? | TV & Radio | Showbiz & TV | Express.co.uk
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Big Bang Theory: What happened to Bernadette's dad Mike? Why did he leave? | TV & Radio | Showbiz & TV | Express.co.uk
Big Bang EPs Debunk Popular Internet Theory That Penny's Last Name Was Revealed in This Season 2 Scene
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Big Bang Theory - Penny's real surname revealed as fans spot major clue? | TV & Radio | Showbiz & TV | Express.co.uk
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