The request has come 'round lately to design the crew t-shirt for Scaredy Squirrel season 2. I submitted this as a possible concept.
Art-nerd win! ^_~
Drawn in approx. an hour in Photoshop CS5, using a WACOM Cintiq 21UX
*NOTE*: Yes, this is designed to be a homage to the famous M.C. Escher drawing thumbnailed in the top-left corner. en.wikipedia.org/wiki/M._C._Escher