The Jackass pranksters are at it again in this third outing, presented for the first time, in some theaters, in 3D -- an effect that redefines the use of the in-your-face technology. Once again, Johnny Knoxville and his cohorts gather together and dream up new childish ways to make each other -- and their audience -- giggle uncontrollably. Whether it's pummeling one another in their groins or throwing together half-cooked skits that employ everything from costumes, sets, wild animals, and most often, feces, the boys are a wealth of "you shouldn't do this -- we're not even sure if we should" comedy. Jeff Tremaine returns to direct the MTV Films/Paramount Pictures production.