The Frankenstein story, as we all know, is about a creature made up entirely of misappropriate and mismatched parts. That's pretty much the way Mel Brooks has made his new film, Young Frankenstein, too. Since all comedy has to be based on some sort of incongruity, this approach works out pretty well for Brooks. Most of the parts he has misappropriated come out of other people's movies. Besides having stolen the whole idea for this movie from James Whale's Frankenstein (1931), Brooks has, for instance, stolen the hairdo for one of his stars, Madeline Kahn, from Elsa Lanchester in The Bride of Frankenstein (1935). At times, as when Miss Lanchester's streak job is set atop Miss Kahn's head, the stolen parts hardly look out of place at all. At other times, as when Brooks' monster (Peter Boyle) clomps his way through a Fred Astaire number of about the same vintage...