I think what everyone's missing here is that today's run of the mill crap is not usually done by well known actor's and director's. Batman Begins, The Matrix, and the others mentioned were done by people that were either new to the scene or wanted to stay faithful to the material.

Finding Nemo (to use someone else's example) was a movie done for adults that kids can love as well (just watch the commentary, they say exactly that in the commentary). So there's no reason why a movie can't appeal to both audiences and not be lame.

In the case of Clone Wars, we should expect and get a higher quality of movie than "a gangster's son is kidnapped and the Republic (who really has no reason to get involved) comes to the rescue". It's being done by the same man that did Star Wars. There are really very few glaring plot holes in ANH (why not shoot through Yavin instead of going around it, why not shoot down that escape pod, etc).

Yes, Lucas is making these for kids, but he's completely forgetting that kids aren't kids forever. They grow up and revisit the movies they loved as kids. When they go back to these movies they loved, they end up hating them and then they never want to watch them again because "I can't believe I use to like that movie". Then, when they become parents, some of them (like me) will simply just not show their kids these old movies because "That movie's dumb and I'm not letting my kid watch it".