Just when things looked like they couldn't get any worse for President Bush, here come the zombies to vote him out of office. They arrive courtesy of Joe Dante's Homecoming, a one-hour movie made for Showtime's "Masters of Horror" series that airs tonight and tomorrow and will be rebroadcast throughout December. One part satire of soulless Beltway insiders, one part gut-crunching horror flick, Homecoming kicks off when the flag-draped coffins of soldiers killed in Iraq burst open and the reanimated corpses of dead veterans hit the streets, searching for polling places where they can pull the lever for "anyone who...