Oh yeah, did I also mention it's free for non-commercial use? Actually the license is kinda better than non-commercial. It basically says as long as you don't make a living from using VVVV you can have it for free. I would love to be forced to pay for VVVV one day.
You can do some really cool stuff really easily with 3d graphics in VVVV. rendering a model is as simple as patching a shape into a renderer. You can then plug in a transform into the shape to make it do anything you need.
There are many different data types between the modules (they are called 'nodes' in VVVV) making it very hard to connect something where it doesn't belong. It is almost foolproof.
This video was made with this simple patch. Maybe 15 components?
Check it out.
Camera Spheres from jonathan ferran on Vimeo.
<3 VVVV