Check out this vinyl Mario by Rsin Art. They call it "Death Blooms," and it's easy to see why. The aesthetic is reminiscent of Dia De Los Muertos art -- specifically, calaberas. Which, you know, is pretty cool even if it's weird to see Mario like this.
This Mario will be featured in the Game On show at the 1AM Gallery in San Francisco. The show opens on March 22, which is during the Game Developers Conference. Here are a couple more screenshots:
Other very cool Marios by Rsin Art (which won't be featured at the show):