Keep CSS Simple: Are CSS hacks getting out of hand? I don’t really use any, that I know of. I don’t have any CSS on this site that panders to one browser over another.
“The complexity monster has reappeared, right in the center of modern Web development. Nowadays it doesn’t manifest itself as an endlessly nested table, but as an endlessly complicated CSS hack.”
Come to think of it, I don’t think I’ve been enamoured with a browser enough to hack CSS. The worst I’ve done is sniff the browser server-side and write different CSS in the STYLE tag.