THE MICHELANGELO CODE? Somehow I've neglected to post on this one, although it's been in the news for a while:

Michelangelo 'hid secret code in Sistine Chapel'

By Malcolm Moore in Rome (The Telegraph)
Last Updated: 12:01am BST 18/06/2008

Michelangelo hid a secret code in the frescoes of the Sistine Chapel made up of mystical Jewish symbols and insults aimed at the pope, according to a new book.

The ceiling of the Sistine Chapel, which the renaissance artist worked on for four years in the early 16th century, is actually a "bridge" between the Roman Catholic Church and the Jewish faith, according to The Sistine Secrets: Unlocking the Codes in Michelangelo's Defiant Masterpiece.

The book, which is already on the New York Times bestseller list, is the work of Rabbi Benjamin Blech, an associate professor of Talmud at Yeshiva University in New York, and Roy Doliner, a tour guide at the Vatican.

Scanning through the arrangement of figures on the vast 14,000 square foot ceiling, the authors have found shapes that correspond to Hebrew letters.

For example, the book states, the figures of David and Goliath form the shape of the letter gimel, which symbolises g'vurah, or strength, in the mystical Kabbalah tradition.

[...]

The book adds that the tree of life in the fresco is not, as usually thought, an apple tree, but instead a fig tree according to ancient Jewish tradition.

The authors believe the entire Sistine Chapel, which they say is built to the same proportions as the Holy Temple in Jerusalem, is a "lost mystical message of universal love" which was intended to be decoded.

The authors believe Michelangelo picked up his knowledge of Judaism while at the court of Lorenzo de Medici in Florence.

[...]

It sounds interesting, but specialists don't seem to be impressed (read on in the article). For Michelangelo and Moses' horns, go here and keep following the links back.