Makes everything Hollywood has lately done in the action genre look clumsy, dull and stale. It is a short, nonstop stuntfest that, by going back to basics and placing them on the screen with simple, breathless stylishness, turns what is essentially a lowlife movie form into something one is not embarrassed to call "pure" cinema--all energy, movement and high kinetic wit.

It may be subtitled, and the faces may be unfamiliar, but District B13 is the best buddy action movie around.

Spread the word: This delirious import is the most (maybe the only) fun action movie of the summer.

With backing from the film's producer and co-writer, Luc Besson, the director, Pierre Morel, mounts a breakneck B movie inspired by Hong Kong action extravaganzas, the gritty genre classics of John Carpenter and the Thai neo-kung fu parable "Ong Bak." He hasn't reinvented this particular wheel, but he gets it spinning with delirious savoir-faire.

The big innovation here is that the two nimble leads, stuntmen-turned-stars, are devotees of parkour, a fancy French word for the fluid use of urban environments as jungle gyms.