The Star Wars question everyone is asking is, Where is Luke Skywalker? As it turns out, he might be right before your very eyes. Recently in Los Angeles, Mark Hamill dressed up as a stormtrooper and hit the streets outside Disney’s El Capitan Theater — where many a costumed character have set up shop looking for tips — to surprise some Star Wars fans.

As with many a Star Wars video lately, Hamill’s stunt was to promote Omaze, a charitable organization who’s working with Disney and Lucasfilm to give away a chance to attend the Star Wars: The Force Awakens premiere and hang with the cast and crew. Who would they want to meet the most? “Mark Hamilton!” says one tourist. “I’m in love with that man.” There’s cute kids, dogs and even a run-in with some old pals like Darth Vader and Chewbacca.

There’s still time for you to win the grand prize too. For the base level donation of $10, you’ll be automatically entered to win 4 tickets to meet the cast, walk the red carpet, and attend the Star Wars: The Force Awakens premiere in London or LA. Winners will also get a flight to the premiere plus a stay in a 4-star hotel. Not bad for $10 and the chance to help out the 15 charities chosen by the Star Wars cast.

So, the next time you see a stormtrooper or Wookiee on the streets, be nice to them, you never know who’s inside.

Star Wars: The Force Awakens opens in theaters on December 18.