A friend of mine recently visited the Atheletes' Performance Institute in Tempe. It's run by Mark Verstegen, who has been a presenter at the SWIS conferences.
Apparently, it's a high-dollar site where the pros go to get even better. While my friend was visiting, he saw Curt Schilling, Nomar Garciaparra, and Mia Hamm all working out.
If you want to see how the other half trains, take a gander at www.athletesperformance.com.