Voivod - Nothingface (1989), The Outer Limits (1993)
my favourite albums by them (though all 5 albums from 1987 - 1993 are great)

First more thrashy and raw, second more often straight out rocking and melodic, both unique, cyberspacedout, punky and with diminished chords galore.

Intro/The Unknown Knows
Into Mu Hypercube

Fix My Heart
and one of the best epic rockers ever Jack Luminous pt.1, Jack Luminous pt.2

I love the atmosphere on these.