The Bad Philosophers
The Bad Philosophers are a group of performers who appeared onstage with Jonathan Coulton and Paul and Storm for the encore of the Dallas, TX: 2009-05-13 show. They were invited onstage by Jonathan Coulton to perform their ASL interpretation of the song "First of May", originally performed on YouTube.
The members performing on stage were Stephen Torrence (also known as CaptainValor), with backup signers Kevin and Kathryn Saunders. Not performing that evening, but in the original video, is Greg Briley. The group is named after the podcast which all of the members have appeared on previously, Bad Philosophy. Stephen Torrence and Kevin Saunders host the podcast and Kathryn Saunders and Greg Briley have both appeared on the show.