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"The cast of 'The Big Bang Theory' talk to Digital Spy about meeting the fans at Comic-Con and we ask them how long they think the show can go on."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/the-big-bang-theory/news/a429529/buzz-aldrin-to-make-big-bang-theory-cameo/>