The Billboard Music Awards will once again be taking over Las Vegas on May 18, it's the perfect time to look back and reflect on some of the BBMA's most iconic moments. How well do you remember the past three televised events? What about the 90's heyday of the awards ceremony? Test your knowledge with the ultimate Billboard Music Awards Quiz -- 14 questions about the past ceremonies, before the 2014 BBMAs touch down on Sunday, live on ABC at 8|7c! Are you a casual fan or a diehard? Find out how many you can get correct.