Congratulations are in order for the Nashville Business Journal's Forty Under 40 class of 2012. We are so proud of our own James Mackler for making this year's list! The following 40 winners, first named during a reveal party Tuesday night at Nashville City Club were deemed to be making a difference in their companies and community by a panel of judges. All of the winners will be profiled in a special section of the March 9 edition of the Nashville Business Journal, with individual profiles following throughout the year. See the entire list here.