I like countdown clocks. They sort of give you a pretty good idea of how much you have to wait (or work) to accomplish one particular goal.
For instance, here I can watch for how long I still have to be a slave (I am under a residency trainning in radiology). Here I can see that I have no longer much time to help with DebConf4 (and that means I still have to work a lot).
I guess I am just tired of advancing calls...
