In StarCraft, the Zerg are an insectoid alien race led by what being?

Overmind

What sign identified the betrayer of Jesus in the Garden of Gethsemane? In which motorsport competition do drivers race through desert terrain annually in stages? Who famously sang "All I Want for Christmas Is You"? What ancient people are famous for their large stone heads found in present-day Mexico? What device measures altitude or height above sea level?