An amusing, but apt analogy that emerged from the race for the Democratic nomination was that Hillary was like a PC, Obama a Mac (see here and here). To take it a bit further, I've heard someone refer to McCain as a Unix mainframe. I'd say more like an old IBM running MS-DOS (and, as it turns out, maybe more like a dictaphone).
Still, it seemed more likely as a US Senator, that Obama would use some government issue Dell laptop, probably running Windows XP, or even worse, Vista. But, lo and behold, Obama does carry around a Mac. (I'm envisioning one of those snazzy black MacBooks).
A PowerBook, a MacBook, an i-Mac, 2 iPods, and an iPhone populate our home. So, I'm definitely one of these people who believe that creative people who care less about the machine and more about what they can do with it use Macs and other Apple products. And, in government, PCs are pretty ubiquitous, so you kind have to go out of your way to be a Mac user, especially when the technical support people refuse to help you set it up (but, then again, after the initial network set-up, you don't really need technical support with a Mac). So, hearing that Obama is a Mac guy only further completes the picture for me of Obama as something different than the typical politician. Then again, all the credit for Obama being a Mac guy seems to go to Michelle who bought him Mac.