Fans of AMC’s “The Walking Dead” know him as Dr. Harlan Carson, but long before that R. Keith Harris was making a name for himself as an actor in films like “Big Fish” and “A Walk in the Woods.” Raised in Reidsville, North Carolina, Harris tried his hand at living in Los Angeles, but came back home with $40 in his pocket and very little to show for his five year investment. For most that would have been the end of the Hollywood dream. But for Harris, his acting opportunities have continued to