No real evidence. Actually, no real attempts at proving or disproving anything. Didn't even give real background on the "characters" in the film. Meaningless.
I have heard of this happening for a long time. As I really don't buy into the aliens coming to Earth (WHY?) thing, this story has always raised some questions...
Fascinating and powerful. Keep your mind open and study it before making a snap judgement.
Interesting and makes me give more credence to the story than I have in the past.