New Kids on the Block - 1989
The New Kids on the Block got about as big as it's possible for a pop group to get. They were selling out multiple nights at football stadiums, landing hit after hit at the top of the charts while stamping their image on everything from lunch boxes to cereal to dolls. They also had the formula down: the bad boy, the young one, the quiet one, the sweet one and, um, Danny. There was even a 1-900 number fans could call to learn more about the group. Basically, they realized this wasn't going last long and they wanted to make money through every means possible. In 1994 they branded themselves NKOTB and tried to make a more "adult" album. Needless to say, it didn't work. The went their separate ways, but in 2008 they came back for a hugely successful reunion tour that's still going. They also set the template for the boy bands of the late 1990s.