Apparently there are office workers with too much time on their hands and not enough vacation days. Therefore, many are creating detailed characters, such as a Smurf, Bart Simpson and a Mortal Combat fighter by plastering different colored post-its on their office windows. Even office drones can have some fun.

Using only the built up dirt and grime on car windows, this extremely talented painter has created detailed renderings of everything from landscapes and famous people to animals and holiday messages.

If you are familiar with computers the chances are you are familiar with Microsoft Windows. The software has gone through many evolutions over the years, which has lead to a revolution in the way we use computers.

1985 - Windows 1.0