After the kr0w commented on my Ubuntu install post about the Emerald Theme Manager I had to try it out myself.
Installing
To get emerald and it's dependencies do,
sudo aptitude install emerald
Enabling
Emerald isn't enabled by default in Hardy, but you can enable it in the command line to try it out,
emerald --replace &
To keep it, edit the compiz-decorator file,
sudo nano /usr/bin/compiz-decorator
Look for the line...
USE_EMERALD="no"
Change this to yes, save and next time you boot you'll be using the Emerald Theme Engine.
Keep losing top of windows?
After install Emerald and playing around with it I noticed I kept losing the top bar to my windows and corners, making things pretty unusable.
Found out I needed the Xgl Server which was missing in my build, you can check if this is the problem by,
compiz --replace
This runs checks to see whats available and the health of your compiz setup, mine told me I was missing Xgl.
Which was rectified by,
sudo aptitude install xserver-xgl
And a reboot, after which things started to work right.
Restarting X Server
If things start to break up you can restart the X windowing system with CTRL-ALT-BACKSPACE.
Avant Window Manager
You can also get the Leopard-like dashboard by installing the AWN,
sudo aptitude install avant-window-navigator
This'll really make people green with envy, however after installing that my double-tap issue came back with the touchpad, but that was quickly rectified by editing my xorg.conf file,
sudo gedit /etc/X11/xorg.conf
And adding,
Option "MaxTapTime" "0"
Under the options for the Synaptics Touchpad, after a reboot I was back up and running,
