Sketchers Studio is a NEW neat animation tool. I am looking into using it right now. I have tried using Antics 3D V5 back in 2008, but, then they went out of business, and I have not been able to get content for their library since. I hear I Clone and Poser 8 are also good choices.
Chime in, If you think I am into something here.
I love hearing feedback. I love using SketchUp!