I'm fortunate enough to be a member of the Royal Observatory in Greenwich - their most recent planetarium show is a cracker : most thoroughly recommend seeing it if you able to visit or should it come to a venue near you:
http://www.youtube.com/watch?v=pOxG4aSQOO8#t=156
Cheers
http://www.youtube.com/watch?v=pOxG4aSQOO8#t=156
Cheers