When it comes to the come-on, nobody does it better than Madonna. In the last few months alone, she's hustled an album, "Erotica," that wasn't erotic and a $49.95 picture book, "Sex," that wasn't sexy. The suckers may howl, but her steely sales savvy has envious marketeers breathing hard. So, on the theory that Madonna is a turbo-tease with a major follow-through problem, let's skip her two-hour movie "Body of Evidence" and jump to what really matters -- the film's two-minute trailer.

Trailers,…