Ministry- I like the late 80s to early 90s phase of the band. Admittedly that's all that I'm familiar with, mostly Land of Rape and Honey. It's a very specific and dated sound, but I think it still has relevance.
Chrome- Another Prindle-pushed group. I haven't heard them in a while either, but they're sorta proto industrial post-rock. Ugh, did I just use proto and post in the same sentence? I definitely have an album or two of theirs on an external hard drive. Harsh psych rock with heavy feedback/distortion. I guess Ministry isn't all that far off of a comparison... didn't really retain much from when I listened to them.
Nomeansno- Quite an underrated punk group. Sort of a precursor to math rock. Wrong is their best release. Bass-heavy, unpredictable, lots of changes... fun.
Manic Street Preachers- Catchy and anthemic yet totally negative... aka British. The Holy Bible is the record I kept playing by them. Was very into it for a while. Sounds like a 90s Brit rock answer to stuff like Gang of Four. I think their politicking got a little tired though.
De La Soul- Great! First three albums are essential hip-hop records. There's some good stuff later on too (mostly the Dilla-produced tracks).