"I'm just asking questions," Bill Maher demurs after a rhetorical challenge offends a devout Christian at a truck stop chapel. Is that all Maher's really up to when he teams up with "Borat" director Larry Charles for this globe-hopping exploration of Catholicism, Judaism, Islam, Mormonism, and Scientology? Decrying sacred cows and wondering aloud if the world would be better off without religion, Maher leaves no orthodoxy unstoned in this comic documentary. 101 min. Widescreen (Enhanced); Soundtracks: English Dolby Digital 5.1, Dolby Digital stereo; Subtitles: English, Spanish; audio commentary with Maher, Charles; deleted scenes.