The Blob

In a small rural Pennsylvania town in July 1957, teenager Steve Andrews (Steve McQueen) and his girlfriend, Jane Martin (Aneta Corsaut), are kissing at a lovers' lane when they see a meteorite crash beyond the next hill; Steve decides to look for it. An old man (Olin Howland) living nearby finds it first. When he pokes the meteorite with a stick, it breaks open, and a small jelly-like blob inside attaches itself to his hand. In pain and unable to scrape or shake it loose, the old man runs onto the road, where he is nearly struck by Steve's car; Steve and Jane take him to Doctor Hallen (Stephen Chase).

Doctor Hallen anesthetizes the man and sends Steve and Jane back to locate the impact site and gather information. Hallen decides he must amputate the man's arm since it is being consumed. Before he can, The Blob completely consumes the old man, then Hallen's nurse, and finally the doctor himself, all the while continuing to grow. Steve and Jane return in time for Steve to witness the doctor's death. They leave and go to the police station and return with Lieutenant Dave (Earl Rowe) and Sergeant Bert (John Benson). There is no sign, however, of The Blob or its victims, and Bert dismisses Steve's story as a teenage prank. Steve and Jane are taken home by their parents, but they later sneak out. Read more on Wikipedia.