Garrett Mace was rocking a pair of LED matrix glasses at Maker Faire:
The shades are a 20×6 matrix (with some pixels missing of course) driven by SPI from an integrated Arduino-compatible in the right temple. There is a Lithium-Polymer battery on the left temple. You can charge the glasses through USB, and download new code to it over the same connection. A button on the right temple allows switching between modes or auto cycling animated patterns.