Just a few points.
Giggler, it may sound strange, the shower thing, but I've read other sources that also say that opposite sex parental nudity is not a good idea (I think I read after age 2) but same sex nudity, is very beneficial.
Susanmt, I'm not sure that's down to sociaty's valuing boys more. I have 2 boys. Everyone assumed I would want 1st child to be a girl. I had a boy. Then everyone assumed I would want 2nd child to be a girl, I didn't. It (he) wasn't. Now I'm pg a 3rd time, I get comments like - "Oh well, maybe you'll strike lucky this time" or "You know what they say - third time lucky" or "Oh, I feel sure you'll get a girl this time". People just seem hung up on the idea that you'll want one of each. So I found the opposite, although of course in some societies/cultures today, and in Britain many a year ago, a male child was important for inheritance rights etc, but I don't think this is the case now.
Both my ds's have also gone straight for the 'boys toys'. I chose lots of gender non-specific stuff like animals, but both ds's first words were 'car' and they remain obsessed. Not got onto the guns yet, thankfully. They played with a barbie for a very short while (about 10 minutes) but just played with her boobs then had her eaten by their crocodiles.