Tim Hortons, eh. It is truly an institution in Canada. If you don't know what Timmy's is that means you probably haven't spent much time in Canada or in Michigan, Maine, Connecticut, Ohio, West Virginia, Kentucky, Pennsylvania, Rhode Island, Massachusetts, New York areas where there are Tim Hortons locations.
Tim Horton was a Canadian hockey player who started a doughnut and coffee shop in 1964. (See Wikipedia for lots of information: http://en.wikipedia.org/wiki/Tim_Hortons) The chain has grown and morphed over the years into what I would consider a cross between McDonald's and Dunkin' Doughnuts. There are locations everywhere here (more than 3000 in Canada), and they are constantly busy. In the US, there are hundreds of locations, but they've recently closed 50 stores. It doesn't seem like Timmy's is quite as successful breaking into the US market as it has been expanding in Canada.