Even though I'm pretty ambivalent about licenses, I'm relieved to hear that the licensing issues have (apparently) been resolved, I hope that this leads to more co-operation between the two best options for a *nix desktop environment, and maybe even (please?!) a common, consistent theme-engine between KDE and GNOME applications. It's time to rise above the petty and childish GNOME vs KDE war (not to mention the C++ vs C, and Qt vs GTK wars), and start acting like you're developing for the same platform in different ways, for different purposes, with differing goals. There is no absolute best language/toolkit/desktop environment/OS/computer architecture/cheese/shoe it's a matter of choosing what works best for you for the task at hand.
I couldn't work as I do at the moment without both the GNOME and KDE libraries installed on my machine, and without the GNOME panel on the left side of my laptop screen and the KDE panel on the right hand side. Saying that either of these libraries is worse than the other is inflammatory and idiotic, they're not mutually exclusive in any way.
Put aside your differences and work on making these two great projects work together, side by side, as I have!
GNOME + KDE
What is it about people that they simply have to believe that the software they're using is the best. Neither KDE or GNOME are particularly wonderful GUIs, I find KDE more bearable than GNOME, once I've removed the ridiculous looking Windows style round radio buttons and checkboxes with ticks inside them. But I couldn't live without KDE and GNOME being installed, there are KDE applications that I love (because I know how to work with them mostly), and there are GNOME applications that I love (the GNOME panel CD applet, volume control, xmms control, and CPU usage applet absolutely walk all over their KDE counterparts) and of course there's the host of GTK applications that work so much better with the GNOME libs installed, like cheops and ethereal. My desktop experience wouldn't be the same without both GNOME and KDE installed, and anyone who excludes an application from their repertoire because it's written for a desktop they don't like is cheating themselves out of the chance to fairly and evenly appraise applications on their individual merits, and probably robbing themselves of a more enjoyable and productive experience with X.
In case you're interested, I prefer the look and feel of the KDE desktop, but I keep the GNOME panel (in auto-hide mode) at the left hand side of the screen as a place for my favorite GNOME applets to reside. However, I couldn't run the KDE panel in GNOME if I wanted to. Therefore, my unscientific conclusion is that GNOME apps run better without a GNOME WM, than KDE apps do without a KDE WM. I'm not sure what to make of that though. :)