10-9-8-7-6-5-4-3-2-1... Blast off! We've all seen the classic countdown, you know, in every film about astronauts, every TV documentary about astronauts, every cartoon about astronauts, and even on I Dream of Jeannie. And live from Kennedy Space Center, too!
Interestingly enough, the creator of the classic countdown didn't work at NASA or Cape Kennedy. The creator of the countdown was actually a motion picture director. His name was Fritz Lang.