Heh. If you want insane, Realms of Chaos chaos. The only thing that could fight it was another Realms of Chaos chaos army. I still have fond memories of my Lord of Khorne (BS9) with his multi melta
.. 3" blast template, S8 or 9 .. he was destroying entire units with a single shot. And since he was backed up by 5 dark elves (BS5) with heavy bolters, there wasn't a whole lot stood up to that
Of course, you had the flip side to that, like another champion of Khorne who was 'rewarded' with the 'gift' Fear of Blood. He'd frenzy, run into combat, slaughter all round him, see the blood, scream like a little girl and faint. Plus my alcoholic dwarf wizard, and his 3 obesely fat dark elf assassion followers.
Fond memories indeed.