teenybuffalo also makes some smart points about Tintin's character, which is really not the blank slate that some claim -- he's just unrelentingly heroic and unflaggingly loyal, which is frequently mistaken for lack of personality by those who prefer morally ambiguous and/or tortured characters. However, I happen to quite like characters who are doggedly committed to doing the right thing if it kills them, so it never occurred to me to see Tintin as bland. Especially since he is, at times, quite wickedly clever and flat-out hilarious. ("...since I've just been bitten by this mad dog!")
One thing I also want to mention since I haven't seen it in any other reviews: I did not at any time feel that these characters fell into the Uncanny Valley, which was a pleasant surprise after the trailer (which did give me such worries). I was particularly watching the characters' eyes to decide if they looked "dead" or not, and I was thoroughly impressed by the light and expression in everyone's eyes. Also, the level of detail is phenomenal. You can see the fine hairs on Tintin's forearms and the texture of Haddock's skin. And Sakharine's hair is fab. :)
Upshot: I want more movies, please.