Nightmares (1983) Joseph Sargent

A collection of short stories. In one a woman who leaves her house late at night to drive to the store while a killer is loose encounters some problems. In the second an arcade whiz kid's obsession with a game leads to deadly consequences. In the third a small town priest loses his faith and decides to leave town, but in the desert is stalked by a mysterious black pick-up truck. In the final story, a family's problem with a rat is larger than they think. 

Thanks to good writing and excellent casting choices, this is (imho) the best of the "horror serial" movies popularized in the 1980's by films like "Creepshow." Some genuinely creepy moments and quality acting make for an excellent ride.