This intro song to The Big Bang Theory covers topics such as the origins of the universe, universal expansion, and the Big Bang. It is important to note that there are inaccuracies in this intro song, so it makes for good review, discussion, and/or an assignment (confirm or refute one of the claims).
Malcolm explains to his brothers the difference between acceleration and velocity while watching TV. He explains that, at any given moment, the Earth is rotating at 1,000 MPH and traveling at almost 67,000 MPH.
Participants in an experiment attempt to understand how runners in an indoor track relates to the universe. They assign each runner a race bib, which contains a galaxy name and its distance from Earth. The runners race at the speeds appropriate to their assigned galaxy: the farther away they are from Earth, the faster they move.
Stephen Hawking tasks a team of volunteers with replicating the Big Bang on in a hockey rink. The volunteers decide to stand next to each other and inflate balloons to simulate an "explosion." They enlist the help of a professional hockey team since they have trouble staying on the ice and need more people to create a better representation of the Big Bang.