http://www.cognitivemedia.co.uk/wp/ theres a few vids out there with really smart people talking, and pretty animations.
my interest and attention was captured intensely for 10 or more minutes on a subject i dont give a rats ass about, and i could be playing starcraft 2 instead of watching the video it works...
My interest has never been captured by lectures before. I just watched an hour's worth of these. Damn.