This B movie with noble aspirations is the work of a gifted filmmaker whose storytelling falls short of his considerable stylistic flair. While addressing crises of faith in the framework of an alien-invasion thriller, M. Night Shyamalan (in his follow-up to The Sixth Sense and Unbreakable) favors atmospheric tension over explanatory plotting. He injects subtle humor into expertly spooky scenes, but the story suffers from too many lapses in logic. The film's faults are greatly compensated by the performance of Mel Gibson as a widower whose own crisis of faith coincides with the appearance of mysterious crop circles in his Pennsylvania cornfield... and hundreds of UFOs around the globe. With his brother (Joaquin Phoenix) and two young children (Rory Culkin, Abigail Breslin), the lapsed minister perceives this phenomenal occurrence as a series of signs and portents, while Shyamalan pursues a spookfest with War of the Worlds overtones. It's effective to a point, but vaguely hollow at its core. --Jeff Shannon