Usher reveals intimate details about his relationship with TLC's Chilli and how their love story shaped his legendary music ...

At various times in the last 20 years, an Usher Super Bowl set ... decade-spanning set of classic hits, he reconfirmed his status as one of one of pop's greatest living entertainers.

and Usher releasing his magnum opus. Let's take a look back at some of the best R&B songs that were released from 2000 - 2009.