Mark Hamill hasn't been seen in a stormtrooper costume since he and Han Solo rescued Princess Leia off the Death Star, as he notes in this video. But he went out on Hollywood Boulevard in full regalia to raise awareness for the Omaze charity that's giving away a chance to win two tickets to the Star Wars: The Force Awakens premiere in exchange for a $10 donation.

Hamill, better known as Luke Skywalker, walks through the center of Hollywood in disguise, running into Darth Vader, Chewbacca and a nice lady who says she loves "Mark Hamilton."

There are two days left to enter on Omaze.com. Star Wars: The Force Awakens hits theaters Dec. 18. Watch the trailer again.