I found this on the same site as the Berger Video: Bernd Greber.
https://www.youtube.com/watch?v=muWkugfmrCk
It gets better as it moves along -the neon colors and steep and bump runs at the end are all pretty slick.
I don't know who he is or was, but this looks like some pretty ripping skiing and a straight ski precursor to PMTS. Is the huge ski lift he does in the bigger turns a Phantom move and was that common among skiers like this in this era? How similar are the moves in the video to current PMTS-and are most of the differences adjustments to modern equipment?
I just haven't seen too many old school straight ski ski videos with free skiing like this. I have seen great old school bump rippers, but not rapid fire carvers like this. Would this have been a model of PMTS skiing in the days of yore.
Oh, and is this guy a world cup racer?? I suspect he was but I have no appreciation for the finer history of that sport, I'm afraid to say. I have never skied a pair of straight skis in my life-but I love old videos like this.