Something was missing in gnome and it was the 'dock' station... I know, OS X done it before, but when you get use to the docker, you just miss something when you come back to linux or windows. The docker is not perfect, but you get what you want 90% of the time and this is why I miss it.
The gnome-do project, did a nice implementation of the docker to gnome. It's not a copy, it's an upgrade. It's a mix between Quicksilver and Dock. Clever idea. And to my humble opinion, it's better and more stable than AWM.
Kudo to the gnome do team.