Crafting Matriarchal societies in SF/F

As you know if you've been playing the home game, I have a certain fascination with the way we breathe patriarchy with our air. It's a driving force behind the worldbuilding in my series. Reading this blog post on the question of matriarchal societies in SF/F gave me some new food for thought.

Before you ask yourself "Why would anyone want to write about matriarchy?", take a minute and think about how many of the really tired tropes in genre fiction stem from the assumptions of patriarchy. Then explore further–the above-linked  blog post from The Border House is a good place to start–and consider all the truly awful examples of matriarchal societies in SF/F lit and gaming. This is definitely one of the areas in which we can do better.

What would a real, functioning matriarchal society look like? What limitations would it impose on people of both genders? I've tried to look at those questions, in a limited fashion, in my fiction. What are some books (or games) that have gotten it right?