I'm looking at doing basic blocking out of forms in 3d and using the output as a guide for 2d concept sketches. It doesn't need to be a super-duper state-of-the-art app, just something that covers the basics with an efficient user interface.
I was thinking about having a look at blender but read some info that didn't paint it in a great light. I also quickly found some other options: Art of Illusion , K-3D and Moonlight|3D.
Does anyone have experience with, or can recommend any, free 3d modeling packages?