Twelve teams made up of mothers and their sons, and fathers and their daughters will compete to win $50,000 dollars. Will being related help or hurt these teams? "Keep in mind that the family that wipes out together, stays together!," said host John Henson. And don't miss the Pitchfork Tumblers, Trampoline Sweeper and Fling Set showcased on this week's episode of "Wipeout," featuring the world's largest obstacle course.