Watch The Big Bang Theory Season 3 Episode 20 online via TV Fanatic with over 5 options to watch the The Big Bang Theory S3E20 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.

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Episode Details

After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.

Rating: 3.7 / 5.0 (3 Votes)
Episode Number:

The Big Bang Theory Season 3 Episode 20 Quotes

Sometimes your lack of social skills astonishes me.


It was a lot of work to accommodate you in my life. I'd hate to think that effort to be in vain.