I am bailing on you guys today to take care of some new contract negotiations. So your trip here was not entirely wasted, you might visit Mikhail Simkin's True Art, or a Fake?*, a quiz to test your knowledge of authentic abstract art.
I scored 92%, but then I'm a student as well as a fan of abstract art, and recognized all but one of the real artworks. Just the Klee threw me for a loop.
*Link swiped from Gerard over at The Presurfer.