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The Big Bang Theory' Casts Judd Hirsch as Leonard's Dad -- But When Will We Meet Penny's Mom?! | Entertainment Tonight
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The Big Bang Theory' Season 9 finale will see sparks flying between Sheldon's mom and Leonard's dad - IBTimes India
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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 - Penny's real surname revealed as fans spot major clue? | TV & Radio | Showbiz & TV | Express.co.uk
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