Louis J. Pearlman
He has been responsible for the appearance of a multitude of artists using the "boy band" format. The first one of his projects were the Backstreet Boys, shortly followed by *NSYNC. These two artists combined were already good for a worldwide sale of more than 120 million units of their releases. They were followed by other projects/artists, among which O-Town, Take 5, Lyte Funkie Ones, Natural (2), Aaron Carter, C Note & US 5.
In 2008 Mr. Pearlman was sentenced to 25 years in federal prison after pleading guilty to charges of conspiracy, money laundering, and making false statements during a bankruptcy proceeding.