well, that's over the top.
the offspring seem to have been initially modeled mostly after the damned, although the dk influence was always very strong. i think anybody arguing that the offspring were never hardcore would be correct. they had more of a thrash influence. but, in truth they're one of the most "british sounding" punk bands to come out of the entire socal 80s scene.
jello also did a spoken word intro on their fourth record, which was '96 or '97.