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Watch The Big Bang Theory Season 4 Episode 18 online via TV Fanatic with over 5 options to watch the The Big Bang Theory S4E18 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.
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Wolowitz baffles Sheldon this week with a magic trick. Elsewhere, Leonard realizes that there's a problem with him dating Priya.