J. D. Roth, born April 20, 1968 (1968-04-20) (age 40), is a two-time Emmy Award-nominated American television personality, actor, a former popular children's game show host, a voice-over performer on many television programs and a television producer of reality shows.Roth is best known as the host of the reality show Endurance on the Discovery Kids channel, and is currently the announcer and co-creator of the adult reality show The Biggest Loser, on NBC.He previously hosted the Fox adult reality game show Unan1mous and the children's game show Fun House which aired in both syndication and on the then infant FOX TV network. He'll be hosting Opportunity Knocks in the fall of 2008.Roth is also the CEO of 3Ball Productions, a television production company based in Manhattan Beach, California.Roth and his wife Christine are the parents of two children, Cooper and Duncan.