The action scenes were far too over the top, but I guess that's what happens when you have Peter Jackson in the crew.
The only other thing that really rubbed me the wrong way was that I went to see the movie in French*, and the credits had subtitles. Now it has been a few years since I've actually watched any English movies dubbed into French, but I don't remember them being that lazy. If there's one language that they should have made a translated version of the opening and closing credits, it's "la langue de Molière, de Méliès, de George Rémi..."
*Since the original books were in French, and one of the big reasons why I learnt it.