Stream Detroit Pistons: 1988-1989 NBA Champions - Motor City Madness Online Free – Watch Full Movie from Home at 123Movies. . The 1989 NBA Finals was the championship round of the 1988–89 National Basketball Association (NBA) season, and the conclusion of the 1989 NBA Playoffs. The series was a rematch of the previous year's championship round between the Eastern Conference playoff champion Detroit Pistons and the Western Conference playoff champion Los Angeles Lakers.