Phone all the friends: ABC is rebooting Who Wants to Be a Millionaire?, the game-show phenomenon that helped usher in the modern era of unscripted TV and briefly turned the network into a ratings powerhouse. As ABC savors the massive Nielsen numbers for last night’s premiere of the Greatest of All Time tournament, execs today announced the resurrection of the flashy high-stakes quiz show, with Jimmy Kimmel stepping into the Regis Philbin role as host. And there’s a twist: The new version of Millionaire will have celebrities sharing the show’s famed hot seat with a guest of their choosing, with the celebs playing for charity. The new Millionaire will debut on April 8, the same night as the Modern Family series finale.