Looks sweet! Kinda makes me want to nix the ambient occlusion and do some realistic renders of my models actually...
I mixed Freestyle, Cycles, and added some node effects to make the objects stand out more. Better results than expected. Could have done better with the lighting though
How did you mix Freestyle with Cycles? I thought that was only a Blender Render effect?
Go to the Render settings in Cycles and it should have a column that says Freestyle. Click on the box to enable it and you can adjust the freestyle settings as you please.