Not bass albums strictly, but the bassists were certainly a driving force in the bands that made these records: Rob Wright (NoMeansNo), Mike Watt (Minutemen), David Wm. Sims (Jesus Lizard). It was a revelation when I found this stuff - bass mags at the time only seemed to go on about Stanley Clarke or Jaco Pastorious. I know they're great players and all, but their smooth waffle meant nothing to me (and to be honest, it still doesn't).
I did however eventually find Charles Mingus, and that felt good.