Well, that took long enough. The Internet Movie Database—the sole reason that nobody can have factual arguments about movies anymore—has been turned into an app. A decent one, no less!
Site-specific browser apps are prone to shittiness, because at heart, they're really just websites. The key is to offer something more, or, if you're offering more or less the same thing you get on the regular website, to present it in a markedly better way. You're not going to find any information in this app that isn't on the full IMDB website—that would be kind of odd—but you will find a neatly-designed, easily navigable reference for just about every film or show, ever, as well as local showtimes, trailers, an TV listings.
It's just about everything you could ask for in an IMDB app, except that it doesn't support accounts, which means that regular users can't rate or review movies, and that Pro users (I assume) can't access all those agents' phone numbers and raw industry data that they pay for on the desktop.
AU: Appears to not be available outside the US at the moment. God I hate region locking, especially for apps with global appeal.
Alas, she is excused of this grave offence, for she is free. [iTunes]