Edge Glow

This entry covers a unique material that was created by the folks at CGMasters:  CG Masters Website.  They refer to it as a falloff technique.  The node setup can be seen below.

I tried it on Suzanne, but was only successfully able to recreate the effect using the node setup rather than just the ramp settings in the right panel.

Also, note that to get this edge glow effect, I had the scene only lit by Environment Light.  I didn't have any active lamp in the render.