We have discussed this, in re both our kids (DS 3 and DD 1).
I don't know if banning things like music channels outright is what we'll do, as I worry that it will make them want to watch the banned stuff.
I worry that banning shuts down discussions sometimes, is all. I can totally see that I may have to eat my words at some stage though.
Not an issue at the mo obviousy, as we don't watch that crap ourselves and the kids are too little to ask for it, but ideally I would like to stop short of an outright ban whilst still making it clear that I don't like those depictions of women and don't want them on when I'm around; DP is of the same mind. If the dc disagree then hopefully it will spark some sort of discussion rather than a "but everyone else watches it" whinge
Other plans we have in the area of example-setting are (1) not bringing any woman-undermining crap into the home ourselves (for example, random copies of women's glossy mags; I used to occasionally buy them, but not any more) and (2) making sure that we have a lot of good, interesting magazines and papers and books lying around for them to stumble across.
I vividly recall that when I was a teenager I didn't admit to being hugely influence by my dad, but in fact lots of my views were shaped by his copies of things like Mother Jones, The Nation, random feminist books my mum had left behind when she moved out, etc etc. He probably didn't know I read half that stuff, but the important thing was that it was all constantly available to me via stacks of subscriptions cluttering up the coffee table. We lived in a small, not-very-diverse, quite socially conservative US town, so it meant I was exposed from a young age to a much wider range of viewpoints than I'd have known about otherwise.
In the online age I buy less media now than he used to, but I'm gonna make a point of reverting to hard copies as the kids grow and just leaving good stuff around all the time.
god sorry, my posts are always so loooooong 