He did a lot of stormtroper stunts as he played a stormtroper in all three films however one of the most memorable is during the speeder chase Dr.Bear is one of the biker scouts that crashes into a tree and is also the scout who is knocked off his speeder by one of the ewok tripwire traps.He played a snowtrooper on Hoth in ESB and was one of the opening scene stormtroopers aboard the tantive at the start of star wars and was one of he troopers chasing Luke and Leia down before the bridge jump aboard the death star.