Ever seen Shock Corridor? Here's the plot as the Times' Hal Erickson describes it:
Peter Breck plays a ruthless journalist who believes that the quickest way to a Pulitzer Prize is to uncover the facts behind a murder at a mental hospital. To glean first-hand information, Breck pretends to go insane and is locked up in the institution. While pursuing his investigation, Breck is sidetracked by the loopy behavior of his fellow inmates. During a hospital riot, Breck is straightjacketed and subjected to shock treatment. By now almost as crazy as he's previously pretended to be, Breck begins imagining that his exotic-dancer girlfriend Constance Towers (a Samuel Fuller "regular") is actually his sister!Your 7-year-old will love Happy Feet!
(via Michael Medved)
Update: All the li'l linkies in that last graf were in the NYT's version. When did they start sticking links in their old reviews? Who cares, it's a good idea.