Gambra
Anarchic Harmonics
go on then.
System Of A Down - Toxicity
Alec Empire - Intelligence & Sacrifice
Wolf Eyes - Burned Mind
Godspeed You! Black Emperor - Lift Yr. Skinny Fists..
Benga - Diaries of an Afro Warrior
Catharsis - Passion
Boredoms - Vision Creation Newsun
The Dillinger Escape Plan - Calculating Infinity would be in there as well but it was released September 1999 even though I didn't get it myself til about 2003 and I had to pick just one out of that list it'd be System Of A Down's Toxicity.