N Sync, No Strings Attached: 2,416,000
Release Date: 3/21/2000
The boy band pandemonium surrounding 'N Sync began in 1997 with the release of their self-titled debut album. Three years later, the group released their second effort, No Strings Attached, and the album sold 2.4 million copies in its first week, setting a record that has yet to be broken. Despite fierce competition from the Backstreet Boys, this N Sync's claim to the boy band throne. No Strings Attached was eventually certified seven-times platinum.