Charlie's Kitchen in Harvard Square is correct in calling its double cheeseburger "famous." Charlie's has been around since 1951, and scads of historically significant people have walked by in burger-eating frames of mind. I bet Obama's had one of Charlie's double cheeseburgers, and all manner of Afflecks, Kennedys, and Wahlbergs are liable to have as well, along with tons of big-mouthed magazine editors and food bloggers. This is indeed one very well known burger. It is not, however, a very well made one. More