Indecent Proposal
One of the biggest teases in film history, this film's sensational plot finds a young wife (Demi Moore) solicited for sex by a wealthy bachelor (Robert Redford), for which the latter offers to pay a cool million bucks to her and her underachieving husband (Woody Harrelson). The two accept Redford's deal, and their marriage is ruined. The twist in the film, though, is that the sin doesn't lie with the rich guy, but rather with this unfocused, immature, equivocating couple who would do such a thing, naively believing it would get their lives on track.
