I'd give the Sixth Man Award to the Suns' Barbosa with SA's Ginobili close behind. I'd think that Ainge in Boston and Kupchak in LA will vie for Exec of the Year honors.
As for the league's best defender, go with Kevin Garnett. Marcus Camby could make a case, too.
Most improved this season? I think TOR's Jose Calderon has really come on. In fact, Turkoglu, Rudy Gay, LaMarcus Aldridge, and Al Jefferson have all taken their game up a notch.
With Barbosa (Brazil), Calderon (Spain), Turkoglu (Turkey), and Ginobili (Argentina), this list has a heavy international flavor.