The War of the Roses (1989)

A married couple try everything to get each other to leave the house in a vicious divorce battle. In this blackest of comedies, a perfect 18-year marriage suddenly becomes unglued and the gleefully evil Barbara (Kathleen Turner) and Oliver (Michael Douglas) Rose single-mindedly inflict as much misery as possible on each other. Rather than just get divorced, they declare war, fighting to the bitter end over their huge mansion and every possession in it. Not even the calculating guidance of Oliver's lawyer (Danny DeVito) can stop this uncompromisingly nasty two some as their vicious battle sends them on an increasingly dark and dangerous path.