Watch The Big Bang Theory Season 3 Episode 23 online via TV Fanatic with over 7 options to watch the The Big Bang Theory S3E23 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, TBS, and Verizon On Demand.
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Blossom alert! Former sitcom star Mayim Bialik guest stars on the season finale as a potential love interest for Sheldon.