Basically the same thing happened to my PC-based laptop. It didn't ge kicked, but it was dropped hard enough to crack the plastic shell directly over the aluminum frame. The damage? One little tiny crack, and one dead pixel. That's it.
In all the time I've had my iBook (G3, 700 mhz, almost 3 years old), I have not had a single problem with it (beside the occasional human damage to it). For example, my sister was mad at me, so she tried to kick me. I was holding the lappy, and she kicked that instead, made it fall on the (carpeted) floor from about 2 feet. Beside a minor screen display problem, nothing is wrong with it. I didn't lose any data, or anything bad like that. I suppose that was slightly off-topic, but it's part of the reason I like Macs: they're durable.
Also, There is something to be said for the upgradeability of PC systems. I've got a gig of ram in my system. If I wanted to double that, it'd be easy. Unscrew six screws, clip in the new ram right next to the old one, re-screw the same six screws. Done. Last time I checked, Mactops aren't that upgradable.