. under this approach , excess tax benefits related to share-based compensation are not deemed to be realized until after the utilization of all other tax benefits available to the company . during 2008 , the company realized $ 18.5 million of such excess tax benefits , and accordingly recorded a corresponding credit to additional paid in capital . as of december 28 , 2008 , the company has $ 36.5 million of unrealized excess tax benefits associated with share-based compensation