Let's say Charles Dickens challenges Mother Teresa to a lightsaber duel--they're both equally fit, so will his superior artistry overcome her advantage in bravery and leadership? Or who wins karaoke--Nelson Mandela or Jane Austen? They certainly both have a way with words, but Mandela's over-the-top courage might take the day. Mixing and matching 100 historical figures in 50 competitive categories, from Ping-Pong to climbing Mount Everest,...