Here's my entry to the killer demo contest.  Besides the 60 second demo 
itself, there are a few *features* I think you'll enjoy.

NEMESIS ?         This is basicly an about...

NEMESIS STARS     Throws you into a mode where the mouse controls the star
                  field.  Try pressing the mouse buttons and moving the
                  mouse.

NEMESIS NEMESIS   This is another mode where you can control the black hole's
                  position and size and the starfield with the mouse.

NEMESIS RGB       This turns the stars to a darker blue for RGB monitors.  It
                  makes the starfields look like those in "Star Wars".  This
                  option also works in conjunction with the STARS & NEMESIS 
                  options.

Also, while the planets are moving in the demo, hit ENTER and you'll be able
to control them with the mouse too!

Enjoy...  -Mark-