The Stuff is a wonderful B-movie-esque film. It was directed by Larry Cohen – who wrote and/or directed such films as Q: the Winged Serpent, Maniac Cop and the It’s Alive films – and stars Michael Moriarty (Troll).
It is about a strange white substance that some miners find bubbling from the ground. It tastes delicious and is subsequently marketed as a dessert, like ice cream. But it isn’t. It’s a living thing that takes over the minds of those that eat it, making then addicted to it, until it controls them completely – zombie like.