Sheldon's red T-shirt bears the emblem of Ralph Hinkley's Greatest American Hero costume.
Melissa Rauch went on the Conan O'Brien Show and told him an embarrassing story about shooting the episode. During the episode she was supposed to get under the covers of her bed. She told Conan that in real life she likes to hike the sheets up and warm her hands under the covers especially when it is.really cold. She did the scene like that once and one of the producers told her that they needed to shoot it again and that she needed to keep her hands outside the blankets because "it looked like she was having too much fun." After they shot the episode a boy came up to her to ask her about it as well.