On a new(ish) approach to presentation

Just in passing: I'm probably late to the party, but I'm coming across more and more examples of an excellent approach to adding animation to talks.

It's associated particularly with RSA Animate: the latest example concerns a talk by Ken Robinson on changing educational paradigms.

...but Jorge Cham is also in on the act: see his take on the physics of dark matter, here.

For some reason it greatly appeals to me--I'd be interested in other examples (there are plenty of RSA animates on YouTube I know about) and information on the practical implementation. Is it done with something like SmoothDraw, perhaps? Apparently that is what Sal Khan uses for the Khan Academy clips (which are well done, for all my reservations about the pedagogy).