PlanesPLANES and PERCY JACKSON: SEA OF MONSTERS

From a grown-up's perspective, I guess that as far as family entertainment at the cineplex goes, Disney's animated Planes and the mythology adventure Percy Jackson: Sea of Monsters could both be considered "harmless." But can you really apply that adjective when something, in both movies, is indeed being killed - namely, your time?

John Goodman, Alan Arkin, and Ben Affleck in ArgoARGO

It sounds like an all-too-Hollywood idea for a high-concept suspense thriller: A sextet of State Department employees are trapped in Iran, and their only hope for escape lies with an ingenious CIA official who plans to free the Americans by having them pose as a location-scouting team for a Canadian science-fiction movie. Yet within its first minutes, director/star Ben Affleck's Argo - based on a recently declassified chapter of the Iranian hostage crisis of 1979-80 - registers as terrifically, nerve-rackingly authentic, even if the film's most enjoyable elements are, in truth, as Hollywood as they come.

Brandon T. Jackson, Logan Lerman, and Alexandra Daddario in Percy Jackson & the Olympians: The Lightning ThiefPERCY JACKSON & THE OLYMPIANS: THE LIGHTNING THIEF

Just because the title is rather unwieldy, and the film is about an adolescent with otherworldly abilities, and this kid has male and female tag-along pals with powers of their own, and there are a lot of CGI effects on display, and the director is Harry Potter & the Sorcerer's Stone and Harry Potter & the Chamber of Secrets helmer Chris Columbus, don't think that Percy Jackson & the Olympians: The Lightning Thief is necessarily indebted to J.K. Rowling. The latest Harry Potter movie, after all, found its hero contending with a Half-Blood Prince. This adventure, on the other hand, finds its son-of-Poseidon protagonist attending Camp Half-Blood. See? They're not even remotely similar.