Doctor Oz did a segment on Extreme Medical Marvels with the tallest and smallest people in America. Igor Vovkovinskiy is the tallest man in America, and has beat George Bell for the tallest man in America slot in the Guinness Book of World Records! Igor Vovkovinskiy is almost 8 feet tall – he is 7 feet and 8 1/3″. Igor Vovkovinskiy wears a size 24 10W shoe. Dr Oz looked like a tiny little man when he was standing next to Igor Vovkovinskiy!