The Big Bang Theory Season 8 Episode 14
The Troll Manifestation
sWhile discussing his work with Penny, Leonard came up with a new idea. He shared his theory with Sheldon and while Leonard slept, Sheldon did the calculations and wrote a paper. At first Leonard was irritated, but then realized Sheldon's paper was good. They decided to publish it on the internet.
A science blog picked up their research and it received mostly positive comments, though one commenter mocked their theory. Sheldon responded and a comment war broke out. Sheldon challenged the anonymous commenter to meet face-to-face. When the commenter reaches out via skype, Sheldon closes his computer.
Eventually, Sheldon and Leonard decide to confront him and skype the commenter back. It's Stephen Hawking! Hawking actually liked their paper, which made Sheldon and Leonard happy.
While the guys deal with their paper, the girls have fun of their own. First, they watch Penny's ape movie until Penny has enough and turns it off. She finds a video of Bernadette's pageant performance and they watch it. Not to leave Amy out, Bernadette reveals that Amy wrote Little House on the Prairie fan-fiction about Amelia and Cooper from the future.
The girls get caught up in the story even though they make a few jokes about it.