A beautiful anomaly. Golden Age of Hollywood style musical infused with the '70s bummer sensibility, but starring Steve Martin in the 1980s. Nothing about this anachronistic mutant mishmash should work, but it somehow does. It's like the last dying breath of the New Hollywood '70s, barely surviving the Heaven's Gate fallout, hallucinating this oddity just before dying.
Allow me to be at least the millionth person to say that Christopher Walken's scene steals the whole goddamned movie. The man tap dances out of his pants, he's a legend the likes that no amount of self parody will ever kill.