I'm not a KDE user, but to be honest, I quite like a lot of the KDE designs. I'll admit, KDE design is nowhere near as meticulous as Apple's design, but even since KDE 3 I've always admired the design anyways, just for being colorful and functional.

Focusing too much on style can be a bit of a problem, though. All too often, Linux theming and UX feels very "skin deep" - and obviously, It'd be great if most people focused on stability and robustness at this point.