Pixar is definitely the cream of the crop when it comes to contemporary animation, although all of it computer generated.

Duck Tales holds up reasonably well, but it has aged of course. Still good animation, good voice acting, and the plot lines aren't too bad. Sure, it's not Shakespeare, but it's ok, appropriate for kids.

Other good shows include Chip and Dale: Rescue Rangers, Tale Spin, and Darkwing Duck. The latter two might be a bit better for slightly older kids. Pretty harmless content all the same, being Disney an all. :)