there's a fair number of good-looking PCs out there - me personally, i have an antec sonata case for one of my desktops, gorgeous black.
lian-li makes cool aluminum cases too.
So really, its just dull if you use that stereotype. Then again, Apple's older computers were dull too. Nowadays most computers come in more than just beige

(personally, i really despise white, would love to repaint my iBook case so it's like translucent silver or something)
as for the ad, don't see why ben gibbard is flipping out. i'm not a fan of such great heights (good, but waaaaaaaaaay overplayed), but i'm a huge fan of dcfc. i think it's just more publicity for them