Very old Hollywood joke: Starving beggar with tin cup: ''I haven't eaten for three days.'' Zsa Zsa Gabor: ''Dahlink, I wish I had your will power.'' Up-to-the-minute Hollywood joke, from Agence-France Presse: ''U.S. Stars Align In Anti-Iraq War Hunger Strike. ''Star Hollywood actor-activists including Sean Penn and Susan Sarandon and anti-war campaigners led by bereaved mother Cindy Sheehan plan to launch a hunger strike, demanding the immediate return of U.S. troops from Iraq. ''As Americans get set to fire up barbecues in patriotic celebration of U.S. Independence Day on July 4, anti-war protesters planned to savor a last meal outside...