of the early millennium i'd say Roy jones, bernard hopkins, felix trinidad, Oscar de la hoya, shane mosley, winky wright, floyd mayweather to name a few.
Ivan Calderon Rafael Marquez Israel Vasquez Not an ATG but Oscar Larios had a continent spanning run in the 2000's Tszyu was still around and something special but wasn't the force he was in the 90's
Don't forget the 2000 - 2010 fighter of the decade Pacquiao This is the recognition that the best boxers wanted, but only the most deserving got it
Ring Magazine's top 10 of the decade 2000-2010 1. Manny Pacquiao 2. Floyd Mayweather Jr. 3. Bernard Hopkins 4. Erik Morales 5. Joe Calzaghe 6. Juan Manuel Marquez 7. Roy Jones Jr. 8. Marco Antonio Barrera 9. Rafael Marquez 10. Pongsaklek Wonjongkam Then there is Shane Mosley, Winky Wright, Ivan Calderon, Wlad and Vitali Klitschko, Miguel Cotto, Zab Judah, Oscar De La Hoya, etc.
Pongsaklek Wonjongkam has a complete who's who of flyweights under his resume. 2000-2009 is interesting, though...