Ross Douthat has an interesting analysis of the health & wealth gospel that has a great following on both the "right" and the "left." He calls it the "Osteen-Schori vision of God." A related article can be found in the Jul/Aug 2008 issue of Touchstone, called The Messiah Channel by Russell D. Moore.
Check out Justin Peters’ work on the WoF movement and its heretical teachers: http://www.justinpeters.org and be sure to watch “demo.”
Mr. Peters spoke at my church and comes recommended by my pastor, Dr. John MacArthur.