M C Escher is _definitely_ awesome. I love his works for long years. Did u know that over the dimension-changing eyetrick pics he made nice landscape pictures of Southern-Italian lands while he was travelling around? His wife was italian. And Escher actually played the chello.
O, and this pic was made on the top floor of the Escher museum, which is a playground motivated by the artist. This thing is in realty very small, just a mirror used to make it look deeper.