Hmm that vid did not work for me, I tried VLC, MPlayer, and Windows Media Player.
I installed just regular SC v1.00 and I found out how to do the sliding terran building trick from
here.
To do it tell a floating building to land, then just hold shift and issue the stop command and then the move command. There is a problem though, in the N64 version buildings have no stop command. Their only options are move and land, so I don't think this trick can be done, at least without the attachment.
But there is some good news, while trying to do this on the n64 version I was able to do another glitch, where you lift a building and build a unit at the same time. This normally won't work because in n64 you can't do both these at the same time, but as a building is landing tell it to move, when it lands it will lift off again and move there, but if you build the unit exactly as it lands the unit will build while it moves. This has very limitted usefulness, but none the less.