If you only knew the charitable contributions of the dark side of the force, you'd know precisely why we've picked the Dune Sea Garrison as the best nerds with a cause. The garrison is the Arizona chapter of the 501st Legion, a worldwide organization of Star Wars costume makers who use their movie-accurate bad-guy outfits to walk for multiple sclerosis or bring smiles to Star Wars fans in children's hospitals. Locally, Dune Sea stormtroopers have been popping up at Phoenix Children's Hospital, Challenger Learning Center, and Tucson's UMC hospital. Maybe the Empire isn't all bad.