Check out Paul Heckbert's ray tracing business card at http://www.cs.cmu.edu/~ph/ http://www.cs.cmu.edu/~ph/ (you'll need to load the page, then search for "bus

Check out Paul Heckbert's ray tracing business card at http://www.cs.cmu.edu/~ph/ http://www.cs.cmu.edu/~ph/ (you'll need to load the page, then search for "business card"). The files themselves are chunks of PostScript code -- they can be viewed with GhostScript or Illustrator.