Penn, Sarandon Unite for Hunger Strike July 5, 2006 SEAN PENN, SUSAN SARANDON and WILLIE NELSON are just some of the big names who will be lending their support to anti-war activist CINDY SHEEHAN's hunger strike. Sheehan, whose son Casey was killed while serving in Iraq, began her "Troops Home Fast" protest outside the White House on Independence Day. Her plan is to abstain from eating and consume only water and juices throughout the summer. Penn, Sarandon and Nelson, meanwhile, will participate in a "rolling fast" along with actor DANNY GLOVER, author ALICE WALKER and nearly 3,000 activists nationwide. The...