Sylvester Stallone is blowing up shit in his upcoming action spectacle "The Expendables," and a new three-minute trailer has landed on the Web. Check it out after the jump... it looks kind of amateurish.

Yes, it's full of explosions, shootings and terribly bad jokes, and while that can be an amusing combination here and there, it just doesn't work for me in this preview. I hope the film itself has a little more to offer.

Anyway, the movie follows a group of tough mercenaries who infiltrate a South American country to overthrow its dictator and free its population. Sly himself, Jet Li, Jason Statham and Mickey Rourke star.

Randy Couture, Brittany Murphy, Dolph Lundgren, Eric Roberts and Stone Cold Steve Austin co-star. "The Expendables" opens Aug. 20, 2010. Enjoy the explosive show below.