Cookers (2001) - sadly, more unknown than underrated cos no fucker seems to have heard of it. but it is a superb, creepy, little low budget horror/psychological drama with outstanding performances from the two leads, especially the male lead.
it's about a junkie couple, who, after stealing a load of meth ingredients from from bad people, lock themselves away in a house in the middle of nowhere to cook up the meth.
what we see is the pair spiraling deep into meth fueled psychosis and paranoia as they begin to distrust others as well as themselves as someone or something in the house is out to get them... brilliant !