I just received a review copy of PulpMotion Advanced from Aquafadas today and I've been playing around with it a bit ... it's an amazing piece of software.
Here is a quick sample of what I was able to do in about an hour of messing around with the software. I did not read any manual or help files... I just stumbled around like I always do and this is what I came up with.
Note: This is a Mac only program.