Inimitable.  Some of us love superlatives, and some of us find them tedious; but all of us will agree that this fellow is inimitable (click the image above to go to his work directly):

Recently, I created an app called Petting Zoo. It is an interactive app for iPhones and iPads, and creating it was a difficult but interesting process.The initial inspiration came from playing with an iPhone years ago. Touching an element on the screen felt so much more immediate than going through the detour of a mouse and a cursor. I had this idea of making a simple line drawing that one could naturally manipulate by touching and swiping. How hard could that be?