This movie doesn't so much suck as blow. Perhaps I should have seen it in the theater; on a standard 4:3 television, the image is the size of a business envelope. I suspect that on the big screen, the look of the film partially makes up for the boring, Harry-centric story, the lackluster performances, and the dragon-bashing.
Kids will love it, of course, but then kids love when you fall down or someone farts. Avoid at all costs.