Cinnamon is a new nice replacement for the Linux Mint shell that is offered from version 12 and upwards. Cinnamon is a GNOME Shell fork created by Clement Lefebvre, the Linux Mint founder, which tries to offer a layout similar to GNOME 2: a bottom panel with launchers, GNOME2-like systray and notifications and more.
Installing Cinnamon won't break GNOME Shell so the two can be installed and used side-by-side.
For Ubuntu 11.10, you can download Cinnamon deb files via its GitHub page - install both "cinnamon" as well as "cinnamon-session".
For Linux Mint 12, use the following command:
Once installed, log out and select "Cinnamon" in the login screen.
‘Cinnamon Minty’, created by satya164 , evokes the colour-scheme of Linux Mint – whose founder is behind the Cinnamon desktop.
The Cinnamon Minty theme can be easily installed in Ubuntu/Linux Mint by running the following two commands in a Terminal:
Once the theme has been successfully installed you can enable it from Cinnamon Overlay > Themes.