Joe, Montana town sign.
Photo by jimmywayne (flickr)

Joe, Montana, (the town), is not officially named Joe, it is officially called Ismay, Montana, but in 1993 after Joe Montana, (the football player), was traded to the Kansas City Chiefs a Kansas City radio station convinced the town of Ismay, MT to change its name to Joe, MT for the football season. The trick worked, and Joe Montana, (the person), lead the Chiefs to victory.

Sadly, the name of the town has slowly reverted to Ismay, but some street signs still remain, and the town raised enough money selling Joe, MT, souvenirs to build a new fire station.