Watch Free Online HD Moviesjoy. Detroit Pistons - Pure Pistons - 1990 NBA Championship Join the Detroit Pistons on their road back to the NBA Finals -- from the opening day ring ceremony to the 1990 NBA Finals. Take a courtside seat as the pistons defend their crown in a quest to become only the third franchise in NBA history to repeat as champions. Behind the scenes playoff and Finals footage, incredible regular season highlights, and rare locker room and huddle footage are all part of this one-of-a-kind look at the Pistons' sensational season.