At the time I got pregnant our family on DH's side (no kids on my side) had 5 girls. I really really really wanted a boy, to be able to 'have the first boy'. It sounds silly, but I wanted to have something 'special' about our baby. And then a few weeks ago, my SIL had her last baby, and it was a boy, and now I think I can say I don't really care anymore... I just want a baby! lol. DH still leans boy, and I think I do a little bit, but I'd also be totally excited with a girl as well. And since we have the five nieces, I have an unlimited supply of girls clothing/toys/etc coming to us, so that's definitely a bonus. We would have enough boys clothing too, but nothing like the stockpile of pink.
In talking about the baby, we always refer to it as "he", but when I randomly picture the baby being here, it's a girl. But as I said... we both think we may have seen boy parts, so we'll see.