The world's most famous drag queen plays three roles -- host, judge and, as the debonair Mr. RuPaul, a mentor -- in this reality-competition show that aims to crown among nine contestants America's next "Drag Queen Superstar." Helping RuPaul determine the bottom two contestants each week, who compete in a lip-synch performance to see which one sashays away, are fellow judges Merle Ginsberg, a journalist and best-selling author, and former "Project Runway" contestant Santino Rice.