For a few hours last week, the Children's Hospital of Los Angeles was overtaken by a legion of stormtroopers, droids and the two most powerful Jedi in the galaxy.

The cast of characters from the "Star Wars" franchise, in partnership with the charitable organization Force for Change, were on hand to bring some joy into the lives of kids going through some tough times. Even Mark Hamill, the one and only Luke Skywalker, couldn't resist taking some time out to hang with these young Padawans.

"Feeling the pure joy & exuberance of those children up close & personal is a gift to cherish," wrote Hamill on his Facebook page.

Joining the 64-year-old actor were members of the 501st Legion, an all-volunteer international organization composed of "Star Wars" costume enthusiasts. The group regularly uses its extensive membership to visit hospitals and blast some fun into the lives of kids around the globe. "The charity work is very rewarding," legion member Stacey Bender said in a recent interview. "To see that child’s face light up when we visit them in the hospitals and how it just brightens their entire day."

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Luke Skywalker, Darth Vader, bring cheer to children's hospital
Smiles abound after Mark Hamill and a cast of characters from 'Star Wars' descended upon the Children's Hospital of Los Angeles.