Original Miniseries
Aliens pretending to be friendly come to Earth and are received openly. The aliens have masqueraded themselves to look just like humans. When it is discovered that the aliens' planet is dying and that they have come to rape the Earth of its natural resources, the war for Earth begins. An important key to the humans' success is distinguishing the their own from the aliens.
IMDb: http://www.imdb.com/title/tt0085106/
Part 1
http://video.google.com/videoplay?docid=76...62005&hl=en