glsnake
glsnake has been dubbed a "hardware accelerated executive stress toy" by its fans. It merely provides a virtual Rubiks' Snake toy for the user to play with by rotating joints about; quite a lot of fun can be had by creating new shapes with this toy.
Read the fine manual page for usage instructions.
If you've got this in a tarball, make sure you have SCons, and GLUT:
type
% scons
to get this up and running.
Patches to me, bug reports to /dev/null, and flames to the web forum of your favourite distribution.
-- Jamie Wilkinson <jaq@spacepants.org>