What do you get if you cross All About Eve with endless nudity? You get Showgirls, Paul Verhoven’s classic so-bad-it’s-good movie. As it turns the big 2-0 has Showgirls aged well like Kyle MachLachlan’s career or badly...like Elizabeth Berkley’s career? The only way I can truly rate or date Showgirls is with a detailed plot summary. It’s the only way I can accurately convey the magic of this movie. We open on our heroine, the aptly-named Nomi (no, me!), played by Elizabeth Be