Today, I walked into my cube to find a Initech TPS Report Cover Sheet on my desk and also to find that my secondary monitor, an LCD, was replaced with an ancient Viewsonic CRT. I still have no idea where my co-worker found that relic. There must be some secret stockpile of old computer crap somewhere.
The good thing was that it was completely functional, so I could actually go about my business. Unfortunately, I couldn't work with it for that long due to refresh rate issues. Anyway, it was a well done prank.