Chewbacca has taken time out of his very busy filming schedule to host an educational video series with the University of Michigan's College of Engineering. In Chillin' with Chewie, our famous Wookiee interviews scientists at the college about their analyses of Star Wars technology. In this video, he learns about the physics of lightsabers. In other videos, Chewbacca investigates carbonite, holograms, ship thrusters, and droids.
Chewie speaks in Shyriiwook, which the scientists appear to understand. But for the rest of us, the videos are helpfully subtitled in English.