Not client work, but thought I would share some of the slides for a lightning talk I gave @ thoughtbot. We have lightning talks almost every Friday, and I made mine about Paleolithic arts. Obviously, I had to mention the so-called "Venus" figurines, cave paintings, etc!
I'm a big fan of early human art history. We may never know the truth behind why these things were made, but it is interesting to see what pops in and out of the human historical record.