Throwing a wrench in Apple's ad campaign

I know the Mac vs. PC ads are hilarious but I often wonder what was going on in the original casting meetings for those ads. Now, John Hodgman is perfect. Funny, great timing, more than a little dorky. But what about the Mac?

Justin Long always struck me as a strange choice. He's mildly cool in the ads but understated. Maybe that's what they were going for. But all I think about when I see him is wrenches.