Do a search for CamStudio. Its free.
I downloaded it last night and got that video up after the second try. I tried doing full screen - but my machine bogged down (17" laptop that is 4 years old) while trying to record and do SketchUp. YouTube smashes things down anyways. Next time around I'll set the screen area to record to an HD friendly size - it should work better.

Note - this isn't 'my' software - its SketchUp - and with the Pro version of 7 you can create joinery and timbers that behave like the versions demonstrated.