Sen. Hillary Clinton hit Hollywood last night at the estate of grocery store mogul Ron Burkle and took home $2.6 million for her presidential campaign. It was twice as much as Sen. Barack Obama raised last month at a similar fundraiser thrown by DreamWorks SKG's David Geffen ? a point that was made privately during the Clinton event by many of the fundraisers. And while the Burkle event didn't have the quantity of star power that the Geffen event had, it sure had the quality. Clinton was seated at the head table with Barbra Streisand and her husband, actor James...