lukeleathercape Mark Hamill as Luke Skywalker. Lucasfilm Twitter can put fans in direct internet contact with their acting heroes. Mark Hamill, beloved for his role of Luke Skywalker in the Star Wars franchise, has always been down to chat with fans on the service, but now he's putting limits on his interactions. Hamill tweeted a heartfelt message Tuesday asking fans to stop sending him direct messages. "To remain on Twitter I can't respond to DMs anymore. No way to keep up w/ the daily barrage of requests for Donations-Phone Calls-Signatures-Skypes-Birthday Greetings, etc," Hamill wrote. He ended it with a polite "Hope you understand. Love you all but can't keep up w/ all the demands! #NoDMsPLEASE." Mark Hamill ✔ @HamillHimself To remain on Twitter I can't respond to DMs anymore. No way to keep up w/ the daily barrage of requests for Donations-Phone Calls-Signatures-Skypes-Birthday Greetings, etc. Hope you understand. Love you all but can't kee...