I give it C-. My descriptors are Corny, Vulgar, and Chaotic. CORNY for the inane "love" element between Shia and his girl (totally non-believable); VULGAR for the blatant and almost NON-stop inuendos (did we need to see dogs humping so much) and CHAOTIC for the OVERUSE of these amazing special effects to the point of being just plain mind-numbing. This is NOT a movie for children. It is scary and just plain nasty at points. There is NOTHING redeeming about this movie; even the 'family' portrayed is a travesty of what a family should be; Shia's 'parents' are portrayed as shallow, dumb idiots. Negative, subversive, and morally damaging messages ALL The way through.