Tales of Despereaux is a complete mess. I've heard the book is good, and perhaps they were much to faithful to it, but the structure of the film is terrible. The main character doesn't even enter until 20 minutes in, and then the first 20 minutes are made moot.
Matthew Broderick was good casting, but Dusting Hoffman is terrible casting. The animation is all over the place; some is quite good, other shots look unfinished. The visual style is not pleasing. The rats and mice look too much alike. Several characters are much to reminiscent of other films (Shrek) and the score is quite derivative. On almost every cue you can tell what the temp score was.
I cannot recommend this film.