I was absolutely obsessed with The Human League back in the day. It was "Love Action" that first piqued my interest (I can remember seeing them perform "Sound Of The Crowd" on TOTP and thinking "what's the deal with the weird hair?" lol).
After "Open Your Heart", I was hooked and managed to track down all their previous releases (including "Dignity Of Labour" which took AGES). Still have them all - including both 7" and 12" versions of all singles from "Sound Of The Crowd" up to and including "Human". My teenage bedroom was plastered with huge Human League posters too

. I didn't mind the album "Hysteria" too much, although it was a long fall back down from "Dare" in my opinion (always though they should have released "I'm Coming Back" as a single though).
"Crash" unfortunately killed my appreciation for them - thought it was a huge mistake. Saw them live on the Crash tour in '87 (when Ian Burden was still with them) and thought they were great, especially when performing the older stuff such as "Empire State Human" - I can remember the audience groaning whenever Phil said "here's another one from our new album" lol.
(I was in a band at the time, and met Phil Oakey at the stage door, and proceeded to hand him a copy of our demo tape, asking for his opinion lol. Never heard anything back - probably ended up in his bin.)
I agree with the previous posters - "Reproduction" and "Travelogue" are very underrated. I still listen to them. "Dream Of Leaving" is a masterpiece IMHO.