I got this from a coworker, who found it on some other forum somewhere.
How to play:
Go to Wikipedia and click on the random article link. The goal is to find your way to the Adolf Hitler page by clicking on links in the article.
Normal Mode: Click on any links. Limit of five clicks.
Hard Mode: Clicking on dates and/or place names is not allowed. Limit of four clicks.
General notes: The back button counts as a click. This isn't simply about finding the quickest route, but figuring it out as you go.
Example route:
Restrepia_falkenbergii
Orchid
Singapore_Botanic_Gardens
Japanese_Occupation_of_Singapore
World_War_II
Adolf_Hitler
Have fun pretending to work.

Edit: Blame any spelling errors on the guy I copied this from.