Who is J.D. Roth?
James David Weinroth, better known as J.D. Roth, is an American television personality, actor, children's game show host, a voice-over performer on many television programs, and a television producer of reality shows. Roth is currently the announcer and co-creator of the reality show The Biggest Loser on NBC. He also hosted ABC's fall 2008 series Opportunity Knocks.
His previous hosting jobs include the Fox adult reality game show Unan1mous, the children's reality show Endurance on NBC and the Discovery Kids Channel, and the children's game show Fun House which aired both in syndication and on Fox.