Chain of Fools: Upgrading through every version of Windows

From DOS 5.0 to Windows 7 (DOS 5.0, Windows1.01, Windows 2.1, Windows 3.0 Windows 3.1, Windows 95, Windows 98, Windows 2000, Windows XP, Windows Vista, Windows 7 , follow the complete migration path in the video below. Note that we are talking about upgrading the OS each time, meaning applications like DOOM II installed on the initial DOS 5.0 still run once in Windows 7!!!

Tell me what you think as I am curious to hear from people in the Embedded industry using Microsoft solutions about this.