Free software to make 3D images and animation. Ever wanted to make a 3d animation, or lay out a 3d map for a game. Well here a good place to start.
Anim8or
Avi8tor: Build a charter then add the animation.

Amabilis
Amabilis: 3d modeling and texture program.

uvmapper
UVmapper: Used to make skins for your 3d creations.