Wax is a free, nice little video editing and FX software. It handle multiple tracks of video and audio.
Here is a list of the features:

1. Loads 3DS objects
2. Full 3D space and lighting
3. Video morphing via WinMorph
4. Can use all virtualDub plugins
5. Can use DirectX plugins
6. Can be used as a plugin within Vegas Video 4.0

Bryce is a software package designed for creating breathtaking landscapes. It is a 3D package designed for the beginning 3D graphical designer and therfore has an amazingly simple user interface, but although more limiting that the more professional products can easily create very detailed movies.