Another stack based language worth learning might be Postscript (even if only to make your coworkers wonder why such a small file takes such a long time to prin

Another stack based language worth learning might be Postscript (even if only to make your coworkers wonder why such a small file takes such a long time to print: http://warp.povusers.org/MandScripts/ps.html http://warp.povusers.org/MandScripts/ps.html or http://www.physics.uq.edu.au/people/foster/postscript.html http://www.physics.uq.edu.au/people/foster/postscript.html )