This classic is on an extended run on it re-release at BFI Southbank. Details here.
Time Out review:
Jeffrey (Kyle MacLachlan) is the contemporary knight in slightly tarnished armour, a shy and adolescent inhabitant of Lumberton, USA. After discovering a severed ear in an overgrown backlot, he embarks upon an investigation that leads him into a hellish netherworld, where he observes - and comes to participate in - a terrifying sado-masochistic relationship between damsel-in-distress Dorothy (Isabella Rossellini) and mad mobster Frank Booth (Dennis Hopper). Grafting on to this story his own idiosyncratic preoccupations, Lynch creates a visually stunning, convincingly coherent portrait of a nightmarish substratum to conventional, respectable society. The seamless blending of beauty and horror is remarkable - although many will be profoundly disturbed by David Lynch's vision of male-female relationships, centred as it is on Dorothy's psychopathic hunger for violence - the terror very real, and the sheer wealth of imagination virtually unequalled in recent cinema.
Here (and above) is the trailer.