For charity of course! Also, who the hell is Mark Hamilton?

Source: Mark Hamill Goes Undercover As A Stormtrooper

“Aren’t you a little short for a Stormtrooper?” If Mark Hamill had a nickel for every time someone said that he’d be Luke Skywalker… or something. For those of you who have been hiding under a rock for the past year, “Star Wars: The Force Awakens” is set to release in two weeks, and if that doesn’t excite you, well… we just don’t know what to say. To promote the movie (as if it needs any further promotion) and to support a good cause, Mark Hamill donned his Stormtrooper garb for the first time since rescuing Princess Leia and roamed Hollywood Boulevard. People who donate to Force for Change have the opportunity to win tickets to the premiere and meet the cast of the movie. Heck, even Darth Vader donated. Why not you?