The Cowgirl Variant by samdonne, SGA. For those who loved Your Cowboy Days Are Over and Summerland, this is the beginning of another story in this universe, still incomplete. Go read it.
I saw it pop up on my flist and thought I was hallucinating. This is my favorite story in any fandom bar none; I just--can't really get over the sheer scope and I don't think I ever will.
And since I'm here:
DVD Commentary by samdonne and another DVD Commentary by general_jinjur, both of which are excellent. And I did a long rec for it here. Mostly me trying to quantify a feeling of wonder.
Star Wars Guide to the Candidates. It's funny because it's true. So, so true.