It was funny. After watching that video, I started to recall all the old os systems I used to play around with. From windows for workgroups V. 3.11, when you booted up into "Program manager" Making boot disks just to get enough memory available to play games. Then there was IBM's OS2 warp (IBM's version of windows)...crap!
Me and my buddy are the only ones that know how to navigate through DOS, and remember Dosshell (kinda equal to a early version of file cabnet or windows explorer. Hell, even using online services such as computserve's WOW, and Prodigy.
Boy, I may have been a geek back then. But, during school while everyone was having a hard time playing Oregon Trail, I was getting out of class to wire up the school network and play in the tech room ...