I'm still stunned by hyper-realistic paintings such as Eric Zener's. If I didn't know any better, I would have believed that he was a photographer and his portfolio was full of real photos. Of course, hyper-realism seems to be the big thing right now in art, with Eric Zener's work as a great example of how to do it right.
Eric Zener's underwater painting series is particularly impressive. Not only are his subjects incredibly detailed and life-like, their surroundings are just as impeccable.