SLD, and though its tenure has not been marked by free-market zealotry, neither has it plunged Poland back into the dark ages.

ECONOMIST: Poland

Marring O'Dowd's early tenure in Colorado was a pair of expensive, ill-fated free-agent signings of veteran pitchers Denny Neagle and Mike Hampton.

FORBES: Rocky Mountain Way

Dudamel kicked off his tenure with the L.A. Phil Saturday night with a free performance of Beethoven's Symphony No. 9 before an audience of nearly 18, 000 at the Hollywood Bowl.

NPR: Dudamel Leads L.A. Philharmonic In Concert

To find out, we valued each free agent based on the degree to which his teams have grown revenues relative to payroll expense during his tenure, going back to 2002.

FORBES: Baseball's Best Free Agents For The Buck