“K-PAX” forces us to question whether there is life on other planets. Depending on how skeptical you are, the film might make you a believer. And even if you don’t buy its messages, “K-PAX: Collectors ...

So is Kevin Spacey a 337-year-old alien from a planet with seven purple moons or is he, in psychiatrist Jeff Bridges' words, "the most convincing delusional ever"? There's a lot to admire in the ...