LOS ANGELES -- Mariah Carey
, Celine Dion
and Mary J
. Blige are among the heady names being tossed around as potential judges for "American Idol" after Steven Tyler
and Jennifer Lopez
skipped out on next season.Star power, after all, is what judges add to TV talent shows that otherwise feature unknowns whose performances can range from surprisingly good to stunningly awful.But Fox's "American Idol," trying to right itself after shedding ...