I had a BS degree in Computer Science, but I was never taught an algorithm for calculating my happiness index, not even in my Artificial Intelligence class. So I had to wing it.
To protest, one of my cow-orkers made "rpc.happyd", a Sun RPC server whose function it was to track the happiness index of the team members over the network, and "HappyTool", a graphical user interface to rpc.happyd which drew a face for each team member, with a slider under your own face for adjusting the face from happy to sad.
Here's a demo of the HyperNeWS version of HappyTool, which I wrote in NeWS PostScript, and which lets you copy an encapsulated PostScript happy face to the clipboard that you can paste into other HyperNeWS applications (like pasting into the customizable clock face to make happy and sad clocks):