Aaron Phillips and Jordan Kairys, two of Will's students, programmed an ER1 to play Skibbles, a kind of multi-modal version of Simon Says.

Skibbles is built on CERA, the Complex Event Recognition Architecture that was originally developed at I/NET (technically it might be most accurate to say it was developed at Neodesic, I guess) and is written in Lisp. According to the CERA paper “Multimodal Event Parsing for Intelligent User Interfaces” it looks like it's being used in an Advanced Life Support project at Johnson Space Center.