My background is in Art History, so this game totally made those four years of college worth it all!
There really isn't a lot of criticism or notes that I can offer because everything was really well done from start to finish. It's hard to say that this was a perfect "game" in the sense of the word because it falls under a completely separate category from most of the games you would find on Newgrounds, but I still enjoyed it thoroughly.
The only thing that occasionally didn't work well were the 3D glasses. I noticed that I had to hover over it once, move the cursor way, then hover again so I could see the original. A minor detail, so I'm nitpicking really.
I enjoyed all the medal titles, and the creative interpretations on the works, so again this was really fun for me. I had to rack my brain on a few of them, and even missed 2 the first time around, but I was more than happy to go back through them all and play again. I think it's one of the few games I have all the Medals on too, well deserved I feel.
Anyways, it's very entertaining, and as always thanks for the time-killer!