Sorry but I was out of town the last couple of days. Human League is mandatory and so is Heaven 17 which consists of the some of the original members of the Human League. A Flock of Seagulls' first 2 albums are pretty good. As for Yaz, New Order, Erasure, and OMD - get all of their stuff before 1988 (meaning their studio albums) - also the first 2 Tears for Fears albums.
I typically use http://dr.loudness-war.info Oh!! On a side note I saw Tears for Fears about 2 years back, they were wonderful live. I'm trying to get in as many 80s bands as possible