To do character animations there are two ways to do it:

1. The wrong way, or the Carrara way, where the animated characters look like zombies pulled clumsily by strings. There are many examples of such animations, and I will not refer you to any link. I will let you do your own research.

2. The right way, or the IClone way, where characters are professionally animated through motion capture. Animations are fluid, natural and realistic. Here is a very fine example of professional, realistic character animation through IClone motion capture. See Link.