I generally avoid the word 'Cunt', mainly because my female friends tend to get violent when they hear it used.
I always find it hilarious when American tv shows, even ones that are rated specifically for adults and shown late at night, bleep anything approaching a swearword; even words like 'tits' or 'crap'. Even more so when they pixelate a hand gesture. Here in Australia, tv and radio shows can say 'shit' at pretty much any time of day and there are no restrictions at all after 8:30pm.
On the other hand, this advert caused some controversy when it was on tv a few years ago. All sorts of old fogeys calling up talkback radio to complain about the foul language.