Stellarium Night sky animation software
Lunar and Solar Eclipses 1 This had a bit too much emphasis on solar eclipses.
Lunar and Solar Eclipses 2 This was the short one that was not too bad.
Lunar and Solar Eclipses 3 Bird's-eye view and view from Earth - we felt this had problems
Lunar Phases Bird's-eye view and horizon view
Comets near the Sun Videos of sun-grazing comets from the Solar and Heliospheric Observatory (SOHO)
Planetary Orbits Scale A video of a scale Sun-to-Neptune model, in the desert
