A blitzed-looking man stumbling out of a screening of this dreadful excuse for unromantic comedy volunteered that the best part of the movie was when Robin Williams got socked in the jaw. Couldn't agree more, but if you like your Williams spewing rat-a-tat gags and substituting stand-up for acting, you'll love him as an obsessive priest bearing down on a dewy-eyed engaged couple (Mandy Moore and The Office's John Krasinski) in Ken Kwapis' high-concept, low-minded riff on the current vogue for marriage-prep classes. Mistaking sadism for satire, sight gags for physical comedy, and stupidity for good nature, the movie has the Rev drive a wedge between the happy couple by spying on them, banning them from sex, and equipping them with animatronic babies emitting blue poop—all designed to bring them the shocking news that weddings may be fun but marriage is serious business. Moore, who made a great high-school meanie in The Princess Diaries and Saved!, is nothing more than a series of toothy reaction shots here. The lone saving grace in this mean-spirited rubbish, with a morsel of rote good will tacked on as an afterthought, is Krasinski, serenely refusing to chew scenery with the rest.