This is a recreation of an SMPTE Universal Leader that would appear at the beginning of old films. Note that this is only a close approximation and is not completely accurate.
This countdown's numbers are from 8 to 2 (each with a beep, including 2-pop) and has film projector background audio.
I used Corel R.A.V.E. 2 to animate, Windows Live Movie Maker to edit and Audacity to create audio.