Invaders From Mars

Totally scared me when I was a kid.

1953 original directed by William Cameron Menzies and stars Helena Carter and Arthur Franz.

Young boy sees UFO land and burrow underground and suddenly the townspeople are under the control of the Martians hidden in tunnels out in the farmland. Paranoid flick about who has been taken over by aliens and who hasn't.

I was convinced my folks were aliens for a long time. Still wonder sometimes.

http://www.imdb.com/title/tt0045917/

Fire in the Sky

A different kind of UFO movie for sure.

Supposedly based upon a real incident, Fire in the Sky was made in 1993, directed by Robert Lieberman, and stars D.B. Sweeney and James Garner.

Loggers see a strange sight in the woods and drive off, leaving Sweeney behind. When they return, he is gone and stays missing for five days. The loggers are suspected of committing murder and James Garner investigates. Plot turns around when Sweeney reappears and claims he was abducted by aliens.

Provoking, dramatic effort is not great but interesting.
http://www.imdb.com/title/tt0106912/