Actor Mark Hamill has an impressive social media following, and uses his accounts to interact with fans directly. Hamill is best known for playing Luke Skywalker in the Star Wars Movies. Last year, Hamill used social media to warn fans that they were getting ripped off by merchandise dealers who peddled his fake autographs. Most recently, he was asked if it was alright for a female fan to attend a comic con dressed like Luke Skywalker.