Keep in mind that albums like Eminem's The Eminem Show and Whitney Houston's soundtrack for The Bodyguard sold over a million copies in weeks other than their first. The feat got us thinking about other impressive opening weeks, like Taylor Swift's recent streak of dominance, or that time N Sync's sophomore LP went double platinum during its first seven days of availability. Those numbers make it one of the fastest-selling records of all time, or more accurately, since Soundscan started tracking sales in 1991. After taking a seven-year hiatus from the music business, Justin Timberlake crooned his way back to the Billboard charts this week, selling a whopping 968,000 copies of The 20/20 Experience in its first week of release.