Fine supernatural thriller, using tension and mystery to build and build, with some well-used old tropes (the dark and stormy night; the radio resetting itself; lights flickering...) to good effect. Great performance from the corpse (I'm not being ironic or sarcastic there).
Very fun movie with one insanely catchy tune that will lodge in your head like a brainspider. It's goofy and surreal, with plenty of jokes, some of which are at oldschool Lego expense, which is fine. Without spoiling however, I think this movie is not just working on a meta-level (big deal, a lot of kids movies do that, to keep the adults interested), but actually transcends this in the last act and becomes meta-meta-level (meta about meta-levelling).
Crazy, fun exploitation flick about a reporter faking insanity to investigate a murder in an asylum, but then finding faking madness and being mad are kind of a bit too close to each other for comfort.
It also actually says things about America at the time it was made, including comments on racism, facing responsibility for one's actions (or not), and how being different can condemn you.
So sleazy in parts, and cheaply profound in others.
Best line comes when the hero finds himself in a women's ward: "NYMPHOS!"