10. Jaunty Jackalope (9.04)
Ah, the jackalope. This mythical animal from North American folklore is said to be a cross between a jackrabbit and an antelope and generally a terrifying creature. What more is there to say?
Jaunty Jackalope, of course, is no myth but rather the Ubuntu version released in April 2009. Faster boot time was one of its hallmarks, along with integration of web applications and services into the desktop interface.