Animation software

my question is: what kind of software do you recommend for animations? vvvv is great but even with the timeliner it doesn t have all the need attributes to create animations.
Basically I d need a software that could highly inter-act with vvvv, in both ways, as far as I can see, creating chunks in vvvv that could be exported as well as importing stuff into vvvv. So far I am using Blender to recreate 3D models and the Gimp to manipulate textures.
I am open to all kind of ideas for the 3 main OSs.