i was a teenage werewolf (1957)

"People bug me too, but I don't go round crowding people."
Tony (Michael Landon) is a hot-headed teen, who keeps getting into trouble. After local cop breaks up his latest fight he suggests Tony visit Dr Brandon (Whit Bissell) to sort out his troubles. He naturally refuses, until he blows up with his friends and inadvertantly strikes his girlfriend (Yvonne Fedderson). Once there the dr hypnotises Tony. Later that night one of Tony's friends is killed in the woods, savaged by what seems to be a big dog.
A classic AIP drive-in horror, hip talking teens, angry authoritarian adults to rebel against and at the centre, a troubled teen.

i married a monster from outer space (1958)

"You're not really listening to me."
Bill Farrell (Tom Tryon) marries Marge Bradley (Gloria Talbott) and from the start he seems different to her somehow. A year into the marriage and Marge is worried that she hasn't conceived yet, but Bill doesn't want to see the doctor. Meanwhile other men of the town seem to be changing, becoming less emotional. Could it be that aliens are taking over humans one by one, and if so how does Marge get people to believe her and how does she stop them?
A classic sci-fi of the commie witch-hunt/enemy within variety so prevalent in the 50's.