I personally use Gnome, KDE, and XFCE, switching between them pretty much on a whim whenever I feel like it. Gnome is definitely the one I have the most experience with, but the others are fun too. Gnome definitely has the eye candy factor in it's favor, KDE seems easier for windows users to adjust to, although it's odd to me because it uses a lot of its own applications, not the ones i'm used to (which may or may not be a bad thing), and XFCE is nice because its neat, clean and very efficient.
So here's my question: What is everyone's favorite environment and why? I think Gnome is the best, but I'd like to hear your opinions about it.