I saw Blink-182 opening for Primus in 1998. I don't really remember too much of the show at all, I just wanted to mention it and list off Blink-182 as another band who I saw open for Primus only to end up getting way bigger than them in the years after.
10/18 - King Diamond
10/24 - Pallbearer
11/01 - Suffocation
11/30 - Devin Townsend
12/06 - Distant Worlds: the Music of Final Fantasy