The funny thing about the name "Big Bang" was that it was originally coined by someone who was mocking the apparently ludicrousness of the theory by describing it as a Huge Explosion. However, the name got catchy with people, as well as the imagery and it became popular. Now that's the name for the theory today :P

Yup

http://www.youtube.com/watch?v=_9-jUP3-bP4

I will forever think of this song when it comes to the Big Bang