5000 Years of Religion in 90 Seconds
Thanks to Monastic Musings for pointing this map out to me.
It's an interesting take, however I'm not sure how accurate it is to have Judaism completely disappear and then reappear only with the establisment of the state of Israel in the 20th century. And how about all of the other world religions such as Shintoism, Confucianism, Taoism, and so on? Here are a couple interesting related images from the Wikipedia entry on World Religions.