If ever there was a definition of vanity project, then this would be it. Whilst it isn't one that sucks it is one that farts, blows and stunt cocks its way through the origin story of this band.

Ben Stiller, who was involved in its production, does a great rock roadie consigned to a job in a instrument store who sends them on their quest and Jack Black has much fun in gurning.

The best song, sadly, is the one where we get introduced to Kyle Gass, but you will remember it long after the film finishes.

Fun, if you like early JB or are about 15.