The app takes the already-popular website and puts it in usable, fast-moving mobile form. Every film tidbit you'd ever want to know is on IMDb, including cast lists, plot summaries and critical reviews. It's a one-stop shop for film buffs and trivia hounds, who can also search for showtimes nearby and even shop for DVDs through Amazon. You can even watch trailers for upcoming or just-released films, should you tire of reading.
Filling up your new iPhone? Just hoping to make the one you already have even better? These are the apps you don't want to be without.