Unity is default desktop environment in recently released Linux system Ubuntu 11.04 Natty Narwhal. It is newly developed product from Canonical.
Unity is very controversial product. There are as much people who love it as people who hate it. Nobody stays aside. You love it or hate it (Marmite).
Lots of people are determined to abandon Ubuntu 11.04 in favour of other operating systems only because they hate Unity.
But do you know that Ubuntu 11.04 comes with 2 (two!) desktop environments? It also includes GNOME. To be precise, GNOME 2.32.1.
Let me show you how to easy switch from Unity to GNOME.