Sex educator Amy Lang of Birds + Bees + Kids demystifies the conversations you gotta have with your kids about teh secks over at Dan Savage's Savage Love podcast (ep. 244). Lots of frank advice here about starting up the conversation ("calm down and get over your shit"), whether we should worry about gender neutrality (no), instilling some shame in your kids (Dan is for it), exposing your kids to nudity (Burning Man!) and so much more.
Warning: This podcast isn't safe for work, and probably not for kids if you don't want them playground staples like "bullshit."