Driving down Edgartown’s School street with lamp-maker Billy Hoff is like a scene from Men In Black — except that, instead of aliens, you see that lanterns handmade by Lamplighter Corner Inc., are right under your nose, and absolutely everywhere. “That’s a bullseye pane,” he says, steering his pickup past a blue-front glass piece on a three-foot high solid brass lamp. “There’s another couple . . . I made that one. Oh, there’s one.” It turns out that almost every house in the district has been quietly adorned with his company’s 19th century gas lamp reproductions.