Here's a great little quiz I discovered, in which you try to decide which of the examples of abstract art are actual masterpieces created by great artists, and which were painted by actual apes.
I only scored 33%, meaning I missed most of the questions. Fortunately, the one picture I actually liked turned out to be by an artist, so homo sapiens didn't totally suck.
Take the quiz here.
The site also has a William Faulkner quiz where you try to decide if a sentence is something Faulkner wrote, or if its simply a machine translation of random German text. I refuse to reveal what my score on this quiz was.