Film leader - number countdown - where can I find?

I thought it would be fun to add an "old fashioned" film leader to the start of a movie (the kind that runs at the very start of a REAL film, with the numbers that count down to 2). But I have NO idea where I can find one. I've only been able to find one professional stock footage place on the web, but I'd have to pay $600 to get this wee clip in a package with hundreds of others.
Is there somewhere that offers this kind of video clip for - ahem - free? Or is it even embedded somewhere as an effect in iMovie - that I'm missing?