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18 epic 'Big Bang Theory' guest stars from the worlds of 'Star Trek,' 'Galactica,' 'Star Wars,' more

Over its 12-season run, The Big Bang Theory evolved into one of television's great pop-culture crossroads. What began as a ...
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Star Trek Legend William Shatner Had One Condition For Appearing In The Big Bang Theory

CBS' "The Big Bang Theory" follows a group of nerds whose hobbies include reading comic books and watching sci-fi shows, with "Star Trek" being a particular favorite among the gang. What's more, some ...