Watch The Big Bang Theory Season 4 Episode 13 online via TV Fanatic with over 7 options to watch the The Big Bang Theory S4E13 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Verizon On Demand, and HBO MAX.
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There's tension at a hotel this week. That's because the group runs into Bernadette's ex-boyfriend during a science event.