I just started working with OpenSCAD this week and so far it's a lot of fun. I don't have the patience to work with 3D graphics editors so it's a great alternative if you know even the most basic programming concepts.
You can download OpenSCAD from http://www.openscad.org/ and here's an online manual
Here's my first attempt at a miniature robot, meet SCADBot 1.0! His butt is a little saggy in this print, but we're still trying to figure out the best temperatures to print this blue PLA. You can download this little guy from http://www.thingiverse.com/thing:50858
On another note, we just finished mounting the power supply to the printer and have cleaned up the dangling wires. A detailed post with lots of pictures will be coming in a few days.