If you read ESPN, or any other number of sites, there's often "button" on the screen that you can press to take you to an innocuous spread sheet, or some other kind of random screen that won't show you fawning over the prospective Rams draft picks (or worse, if you're on CNNSI).
I was at CollegeHumor.com today, and saw a Boss Button from CareerBuilder. It was an advertisement, but I'm always curious, so I clicked it.
OMG. If you're playing the video, it doesn't stop the video. It Instead overlays this onto your screen.
Try it out for yourself. Go to this safe video on College humor (3 year-old talking about StarWars).
Now click the boss button.
It says - "this employee is hiding the fact that he or she would rather watch ridiculous videos than work on your project".
OMG. I don't know if I should laugh or cry.