Anti-war activist Cindy Sheehan is now "channeling" her slain son, Casey, from heaven, suggesting he's calling President Bush "an idiot," and she claims to have "tens of thousands of angels" supporting her cause to bring U.S. troops home immediately. "When I get up [to heaven], he's gonna say, 'Good job, mom,'" Mrs. Sheehan said in a speech last night upon her return to Crawford, Texas. "He's not going to say, 'Why'd you make me spin in my grave?' you know. And I can just hear him saying, 'George Bush, you are really an idiot. You didn't know what you were...