In one episode, the character Sheldon showed up to a Halloween party dressed as the Doppler Effect. In another, the boys compete in a physics bowl, complete with real questions and equations. When analyzing their interactions with their attractive neighbor Penny, the boys often use scientific terminology to describe their emotions. They talk about heart rates, pupil dilation, and hormonal imbalances, where others would simply discuss "feelings". One of my favorite moments involves Sheldon's discovery that someone altered his work on beta function of quantum chronodyanmics. When he confronted his nemesis, Leslie Winkle, as the perpetrator, Winkle replies, "Yeah, I noticed it when I got up to get a glass of water, so I fixed it, and now you can show that quarks are asymptotically free at high energies. Pretty cool, huh?" Yes, it is. And the science is correct, which makes it even better.