Yep, he does know how to get his point across. I frequently use his description of what the future will be like: Old people, living in cities, afraid of the sky.
He's also a world-class curmudgeon.
Here he is, throwing live grenades into the audience of young startup-dudes. He really gets going at about 8 minute mark:
Chit-chat after the talk must have been... interesting. :-)