Sun Microsystems made puns using the Sun name for several internal tools and programs. Here are some that come to mind; I'm sure there are others.
* Sun TEA (travel expense authorization)
* Sun TAN (old name for a training program)
* SunWay (the shuttle service)
* SunScreen (background checks)
* Sun Spot
* Sun LAMP (loaner equipment for demos)
* SunDial (HR help desk)
Anybody who spent any time at all with Sun Microsystems will remember at least a couple of these.