wmJupiter is a Window Maker applet which features the planet Jupiter. It allows you to keep track of the Great Red Spot and the current distance in astronomical units (AE). The four Gallileo moons (Io, Europa, Ganymede, and Calisto) are also displayed when they are near the planet.
iloog is a Gentoo-based live CD targeted mainly at students and scientists. It features UnionFS filesystem support that enables you to write everywhere on the LiveCD and install extra packages, a graphical X environment through the Fluxbox window manager, many programming editors and IDEs, and a plethora of scientific applications, including Octave, Namd, Merlin, and full (La)TeX support.
KaufKauf Slim Linux is a fully configured Linux-based operating system that is able to run from flash memory. It doesn't require more than 700 MBytes of disk space. It comes with full support for several touch controllers and is made to run on weak systems (400 MHz CPU and 256 MBytes RAM are enough). It is designed for embedded systems, doesn't need to be shut down cleanly and comes with Xfce, CUPS, and several other features.