I had this one hung up on my cubical wall when I was doing phone tech support a few years ago

http://xkcd.com/627/

![enter image description here][1]

EDIT:
Now that I was promoted to the dev team I have this one on my wall

![enter image description here][2]


  [1]: https://i.sstatic.net/IZm1c.png
  [2]: https://i.sstatic.net/fwrqy.png