Distros:

SuSE * ** Has its strengths, has its weaknesses. Does it's job for a desktop user such as myself.
Mandrake - Sucked. Got the latest version off a friend and the install program died.... twice. Every time I tried to do anything using its config program it would crash half the time.

WM:

KDE * ** Has come a LONG way from 1.0, which was when I first experienced it. It does what I want it to do, while looking and feeling natural.
Enlightenment - Pretty, but crap. The UI design was just hell, felt very unintuitive.
GNOME - I have yet to get this damn thing to work properly. Every now and then I'll upgrade to the latest stable version and spend the next few days trying to get it to stop f'ng up. Then I give up on it again.
A bunch of other WMs - None feel intuitive like KDE. It's just the little things. Like on a lot of them when you right click on your desktop you have to hold the button down or the menu disappears. And it's the little things that drive me nuts.