Well, there're lots of window manager.
But I think the 2 ones above have most credits of eye-candy !
If your video card is Intel integrated chipset, than maybe you should try AIGLX rather than XGL.
I saw combinations of GNOME+XGL or KDE+XGL, and I've installed AIGLX+Beryl+GNOME on Intel 945G successfully. I have to say XGL's transparency and cube's rotation is really outstanding. When you press ALT+wheel, you can tweak the transparency. When you press SHIFT+wheel, you can tweak the lightness. When you press windows key+wheel, you'll get a zooming!
It's a good news that XGL seems to be easily installed on Ubuntu Edgy(6.10).
And also, edevelop.org team has been working Elbuntu which window manager is Enlightenment 17 rather then GNOME.
Ubuntu had been a excellent distribution with nice compatibility. Now, I can see it will be a shining distribution!
