[DUG] Program screen video capture

[John Bird]

I have seen a few examples of people using products like Camtasia studio to 
record program operation - I am interested in making some simple quick 
tutorials.

What tools do people here recommend?

Free and simple ideally, ability to capture an audio commentary would be 
very handy too.  Making files that are not huge for downloading also is an 
advantage.  Length maybe up to 1-2 minutes.

John