The first thing that makes a good movie good is always a great story. The whole idea of actors from a long ago space series being mistaken for being the real deal by actual aliens is indeed ingenious.From there, you put together a top notch cast.They hit the nail on the head there. Tim Allen is a natural for the Jason Nesmith role.A great cast is nothing if they don't work well together.Not to worry.They are superb. This movie is an excellent twist on the old good vs.evil concept.There are movies whose ideas are so unique,you want to love them and not be disappointed.Take my word,Galaxy Quest delivers the goods.Warp speed!