Shallow Grave (1995)

Moral: Money can make you do very, very bad things.

What could make three, law-abiding yuppies roommates decapitate another roommate's corpse, cut off his hands and feet, and dispose of the mixed parts in several unsavory ways? An unchecked phone bill? Director Danny Boyle (Trainspotting) takes a comically macabre look at the lengths flat-mates Kerry Fox, Ewan McGregor, and Christopher Eccleston will go to keep a suitcase full of cash when their new, mysterious roommate dies of an overdose.