Try Ubuntu GNOME
Ubuntu GNOME is an official flavour of Ubuntu, featuring the GNOME Desktop Environment instead of Unity. The ISO images contain a Live Session that allow you to Try Ubuntu GNOME without installing or changing you installed system.
For help see: https://wiki.ubuntu.com/UbuntuGNOME/GetUbuntuGNOME#Try_without_Installation
Your task is too create a USB, DVD or VM and try Ubuntu GNOME using the Live session either on real hardware or in a VM. Play around with the system and try a few of the default applications.
Write a complete description of the process using screenshots and tell us what 3 things you like about Ubuntu GNOME and 3 things you dislike about Ubuntu GNOME. Make sure to include a screenshot of the running system in your report!
Make sure you are using the Ubuntu GNOME ISO image, and not a plain Ubuntu one. Find us on IRC: #ubuntu-gnome on freenode if you need help