Tux the Linux Penguin
It is sometimes (but probably apocryphally) reported that the name was derived from Torvalds UniX, a name suggested by James Hughes, as opposed to the explanation that penguins look vaguely like they are wearing a tuxedo.
Tux was designed during a contest to determine the best Linux logo. Pictures of some of the other logo contestants can be found at The Linux Logo Competition site. The original design for Tux was done by Larry Ewing in 1996 using the GIMP, a free software art package, and he has released it under the following terms and conditions:
- Permission to use and/or modify this image is granted provided you acknowledge me email@example.com and The GIMP if someone asks. 
Tux has become an icon for the Linux and Open Source community, with one British Linux user group adopting several penguins at Bristol Zoo. He is much more famous than his big friend, GNU, a peaceful and shy gnu that represents the GNU Project, another Open Source Project.