No other state uses "plantations" as places except for Maine. Think of Maine Plantations as having to do with a civil type of definition. A plantation in Maine is not a town or village, and it's not one of our "unorganized territories." But it's still pretty unorganized. A Maine Plantation is self-governing and provides most of the same services as a town, but unlike a town, does not have the power to make ordinances.
Actually, Billy Crystal DID work for WBLM. In the movies. Remember City Slickers from 1991? Billy played a Radio Sales Executive that worked for...WBLM! Here's the classic Classroom Scene where he talked about the wild and wonderful world of WBLM radio sales.