Skimming through this thread has brought back some memories I can tell you....
I'd completely forgotten about Ashra for example, and have now gone rooting through my collection for 'New Age Of Earth' to find it missing. (d'oh!)

My two cents on this, is that Tangerine Dream are most definitely an acquired taste. When I was younger my dad used to constantly play 'Zeit' at me, which is one of their most difficult albums in my opinion, and to be honest, I used to beg him to desist.
However, after a while, I started to get an ear for the quirky, weird, avant-garde, possibly just by saturation, and now I own 'Phaedra' and my personal favourite 'Force Majeure' which I consider prog rock of the highest order, minus the guitars.

But having said that, I do like Can, Hawkwind, Gong, Spirit, Faust etc, and appreciate most people would rather do without. (my missus for example)

And no, I don't require a camberwell carrot to listen to em either