Okay, let me have a go at this as well.
CLi, nothing more, nothing less. Desktop manager, tsk, tsk, tsk, for people to lazy to mkdir, mv, cp and rm. Wallpaper? Nothing some fancy ASCII can't fix. Vim, mplayer, mp3blaster and lynx2. What more can you want?
Seriously, I have stuck with KDE even through the disastrous initial KDE 4 release, and it is not half bad in 4.2, I have high hopes for it. I can see that the devs really spend some time making it future proof, and come a year or two some of the features that are now gimmicks are going to be essential for the Desktop environment.
I still hate Gnome, end.
Looking past the fact that there are only a handful of DE's, I'll mention the following WM's as some of my favourites as well:
E17, fluxbox, TWM
EDIT:
If you want to try out some new WM or DE, here is a comprehensive list of the ones you can try out:
http://xwinman.org/