I have a Macbook and would like animation software where I can create stuff and then import it into imovie to add music, titles audio and stuff.Oh, and I don't want it to be 3d, more like an old fashioned 2d animation style.

It is a shame you do not have linux as there are quite a few and they are awesome.There are other ways of doing it. You can make your pictures then put them in something like a linear video editor.There is no beating the software that I have. I love Linux (sorry to gloat)http://mac.softpedia.com/downloadTag/2D+animation