Kite fighting is a real sport in several Asian countries and can be very dangerous, several fatalities have occurred. It is often thought of as the most dangerous sport due to the number of injuries and deaths. The kite lines are extremely thin and either coated in crushed glass or made from thin metal. Aside from fliers cutting themselves and each other, often resulting in severe or debilitating injuries , lines left around from finished games have been known to decapitate cyclists, leading to many countries introducing restrictive rules on line composition, clean up protocols or bans on play outside controlled arenas.
When Raj is watching television in his apartment, the song "Mere Mehboob Mere Sanam" from the film Duplicate (1998) is heard.
Howard (Simon Helberg) claims that he drives the second largest Vespa that the company makes. If true, this means he drives a Vespa LX GTS 125.
Title Reference: The football team (Nebraska Cornhuskers) Penny and her friends watch and root for and the fact that Leonard gets caught up in trying to understand the sport of football to fit in with Penny's friends.