Contrived yet unpretentious, predictable yet surprising, this underdog comedy and its title character have considerable charm.

Sally forth, gentle viewer, and enjoy yourself. En route, you will experience a steady supply of doo-doo jokes, dispensed in seven-minute intervals by the Script-O-Tron 3000TM.

A comic named David Spade stars in a movie called Joe Dirt, and that's about as funny as things get here.

In place of anything resembling a plot, the movie wheels-out a tired collection of set-piece gross-outs for Joe to endure.