From the Alamo Drafthouse website:
Join the Fountain City Roller Derby, Doug Benson (SUPER HIGH ME, Doug Loves Movies Podcast) and a secret special guest as they team up to bring you another installment of the Benson Movie Interruption featuring the classic Raquel Welch film KANSAS CITY BOMBER. Enjoy live in-theater riffing throughout the entire film from Benson and friends. All proceeds go towards the Fountain City Roller Derby teams! 

I'm not sure if I'm the secret special guest or not but if I am, people will be majorly disappointed.