Then: The Backstreet Boys were at the height of their fame in 1999, playing sold-out arenas and stadiums all across the globe and scoring big hits with "Larger Than Life," "Show Me The Meaning Of Being Lonely" and their signature smash, "I Want It That Way." They faced strong competition from 'N Sync, but by now it was clear that the market had plenty of room for both acts – and BSB was in the lead, topping year-end charts with over 9 million copies sold of their Millennium album.
Now: Unlike most of their peers, the Backstreet Boys never broke up. When the teen-pop bubble inevitably burst, they found themselves playing smaller venues and selling fewer records, but they held on to enough fans to keep them in business – soldiering on as a four-piece after Kevin Richardson quit BSB in 2006. (He rejoined the band this spring.) In the past year, they've returned to arenas as part of a double bill with New Kids On The Block, and next year they are plotting a 20th anniversary tour. If that doesn't make you feel old, nothing will.