How Steve Ballmer Introduced Windows 1.0 in 1986
Adam Rifkin stashed this in Steve Ballmer
Stashed in: Microsoft
Top Reddit comment:
That video was made for the Microsoft company meeting in 1986 and was intended to give employees a laugh -- it was not an actual advertisement (or even intended for showing outside the company, as far as I know).
Source: Worked there then, was at the meeting, still have my VHS tape of that and the other videos shown that day.