Possible Clues:

• Clark's "Gone With the Wind" role
• He gave Scarlett fever?
• He could make Scarlett see red
• Butler who didn't give a damn
• Love for Scarlett
• Butler from Charleston
• Speaker of the "most memorable film quote ever," according to a 2005 poll
• Bonnie Blue's daddy
• "You should be kissed, and often, and by someone who knows how" speaker
• Clark role