When Raj swallows an Aspirin, he takes a swig from a can; however, when 'Eye of the Tiger' starts again and the camera cuts, the can is gone.
Leonard tells Penny that Chris Columbus directed Gremlins (1984). Joe Dante directed Gremlins. Correction: Leonard says all of the movies they are watching were written by Chris Columbus, not directed.
Sheldon states that "even today, I understand [piracy] is an all male profession". Piracy was not an all male profession even in the 18th Century, with two famous examples being Mary Read and Anne Bonny.
At the beginning, the four main characters are watching the movie "Gremlins." Sheldon says that the movie baffles him, stating that "The instructions are very clear: don't feed the Gremlins after midnight, don't get the Gremlins wet. How hard is that?" However, the creature in the movie is a Mogwai; the Gremlins are only created after the rules have been broken.
Raj says that halfway to India is off the coast of Japan. In fact, halfway from Pasadena, California to New Delhi, India is near the coast between the East Siberian Sea and the Laptev Sea.