Artist assistants stand next to 3,604 cups of coffee which have been made into a giant Mona Lisa in Sydney, Australia . The 3,604 cups of coffee were each filled with different amounts of milk to create the different shades! Those Aussies sure do know how to have fun (as I know from personal experience.)
Another fun-loving, art-loving, puzzle-loving person is Shouts from the Abyss (despite his grim name), who posts some of his pixel puzzles. To find them, click on pixels in his tags on his blog (on my blogroll). Here’s one of his puzzles. They get harder, but I thought I’d start you out easy.