Good Gear Guide
In Pictures: 10 things we like about Ubuntu Linux ...
Head-Up Display (HUD)
HUD provides an alternative to menu-based navigation. With HUD, instead of clicking on menu items, you tap the alt key to bring up the HUD and start typing what you want to do. Reminds us of the autofill feature found on most search engines.
In Pictures: 10 things we like about Ubuntu Linux 12.04