cul100 is another "spawn of the devil" type units, my non-MQ friends (who have often critiqued by cul100 assessments) call it "Society and Culture on crack". That being said I think the pass rate is still very high, but few people I know have got anything higher than a credit.
The unit itself is comprised of about two "definitions" (deconstruction, identity, gender etc) each week. It's something of a crash course for all their 100-level units, we assume, and it can be really boring and tedious sometimes.
Much like SOC180, people I know have tended to either "do well" or "just pass" with no real understanding of why (for that matter, of the people I know most tended to do well in one and absolutely suck at the other), and this can be really frustrating sometimes. The content itself really isn't that bad, and I remember quite enjoying some of the lectures (although some of the terms were just whacked... like, "surveillance"?) but the fear of thinking "oh my god, I think I'm going to fail and I don't know of anything that can help me right now!" sucks big-time, especially when you only have a vague idea of where you went wrong in the assessment and little/no idea how to make sure it doesn't happen next time.
The bright side is that there's no end of semester exam for this unit - just a final hand-in essay. I think it's reasonably easy to pass, but brace yourself for frustration.