The vid embedded after the jump is an older one, dating back to Marcus Grönholm's days as WRC factory driver for Peugeot (he's with BP-Ford now). It's brief, but well worth your time, as it details the story of an in-car mishap involving a stone and co-driver Timo Rautiainen. The payoff comes at the end, when Grönholm explains in very simple language what happened, and then backs it up with a descriptive gesture just in case you didn't understand. Classic.
Note: Possibly NSFW for a little bit of language. Or because you'll laugh so hard that everyone'll walk over to see what you're watching.