And, how is it set up?

I use Ubuntu 10.10, under GNOME, so I use Compiz, with the GTK window decorator (the default, as opposed to Emerald). I used to have animations aplenty, but decided they were tacky. All I got is the Exposé-style Scale, and a custom window switcher. Oh, and Desktop Cube. Can't forget that. :D

As a failsafe, I have Metacity with compositing enabled.
(I tried xfwm4, but it needed too much xfce/xubuntu stuff to be functional and customizable.)