GNOME 3 Fallback with Compiz
Ubuntu 12.04 and 12.10
Install GNOME 3 classic
apt-get install gnome-shell gnome-panel
Install CCSM
apt-get install compizconfig-settings-manager
Install gnome-tweak-tool and gconf-editor
apt-get install gnome-tweak-tool
Use Add to panel like in GNOME 2 => Super (Win Key) + Alt + Right Click
Add the Indicator Applet Complete
Switch Display Manager (GDM or LightDM)
sudo dpkg-reconfigure gdm
OR
sudo dpkg-reconfigure lightdm
Ubuntu 11.10
GNOME 3 Fallback (Classic) + Compiz, for people like me who do NOT like Unity at all and show no interest towards Gnome Shell, like Classic GNOME 2 + Compiz
Install GNOME Shell (suppose you are on Ubuntu 11.10)
apt-get update && apt-get install gnome-shell gnome-themes-standard
Start Compiz manually
In Terminal
compiz --replace ccp &
Auto start with Gnome 3 fallback mode session (Recommended)
Edit file /usr/share/gnome-session/sessions/gnome-fallback.session
Replace your windows manager (gnome-shell,metacity) with compiz in RequiredComponents line. Change DefaultProvider-windowmanager line to DefaultProvider-windowmanager=compiz
Here is the sample gnome-fallback.session:
[GNOME Session] Name=GNOME fallback (Safe Mode) RequiredComponents=gnome-panel;gnome-settings-daemon; RequiredProviders=windowmanager; DefaultProvider-windowmanager=compiz DefaultProvider-notifications=notify-osd DesktopName=GNOME