In response to requests by four (yes, four) of its readers, Mental Floss assembled a linktastic piece on Marcel Duchamp. If you're an art aficionado, you're probably not going to learn anything new. However, if you are un- or only vaguely familiar with the boundary-obliterating French genius, take a gander. One highlight:
"For at least 25 years, Duchamp was thought to have given up art for a career in chess. He developed an obsessive fascination with the game to such an extent that it supposedly led his wife to glue his pieces to the board. They divorced four months later."