Tintin
It's beautiful to look at, I've had no problem with the believability of the mildly caricatured characters. The highlight is Serkis, who's both very good and pretty recognizable as the captain, and provides most of the laughs as well.
There's a lot of stuff that would indeed be impossible to film in live action. Some scenes get pretty intense like where Tintin is nearly hit by a few cars; others are totally cartoonish. There's also a totally insance set piece involving a chase that goes on forever and keeps getting more and more crazy, but I've also been shocked by a naval battle. I'll have to watch it again with the original voices (IMAX version has to be dubbed to get enough people interested) to see how well the Frost-Pegg duo works as the twin detectives.
So how's the movie? It's an interesting mix, as I've mentioned the action is completely insane at times but IMHO manages to stay on the right side of the edge. Spielberg is clearly having a lot of fun with the new toys, he's a master of movie making in the digital realm as much as in the real one. There's a lot of laughs too, and most of them are pretty hard to resist (like the definition of a cleptomaniac) and I have to repeat that it looks wonderful. The amount of small details and the richness of the scenery makes it worth to see the movie at least once more.
Yet the story isn't as good as the first Indy movie, there are far too many scenes of Tintin drawing the right conclusions from just a few facts, the pace is perhaps a bit too fast, most of the characters aren't interesting at all, so if it was live action you wouldn't remember it for too long. It's also quite evident when they're unable to use mocap and the manual animation is a bit too cartoonish compared to the complete realism of the actors' original movements.
But all in all I'd say you have to see it, and hope for a sequel with a bit more depth (it's success seems to be guaranteed at this point with some $160 million box office already, without the US).
