People who are bigger fans of Tintin (the franchise really doesn't "exist" here in the States for the most part, though a cartoon ran on Nickelodeon back in the day) are going to have to tell me if the movie seems to be "getting it" or not; but thus far I'm pretty enthused.
I'm still not convinced that motion-capture animation is "there" yet, but it's not going to get "there" if people don't keep refining it. Also, good filmmaking can overcome limiting techniques, so we'll see.
It'll be interesting to see how, if this is good, it effects the debate in the animation world over the technique. Last year, The Academy Awards made headlines by deciding that films primarily using mo-cap DON'T qualify for animated-film Oscars; which to be honest sounds somewhat illogical to me. I understand that there's a pervading fear/resentment in the animation business that motion-capture devalues (literally and figuratively) the work of full-blown animators; but people have been rotoscoping for decades and I don't see how this is appreciably different - particularly in the case of something like "Happy Feet," which used humans to mo-cap non-human animal character with major animation-additions later.