Ha, I realized two minutes after I commented that you already mentioned Sesto's Aria :)

Oh, oh! You must add windtossed to the list! Oh my god. Her fics made me exstatic (sometimes with grief, but the best kind). And gradiva, definitely. Actually, I have my own rec list prepared just for occasions like this, so here: http://www.diigo.com/user/Rinning. I don't have a tag for IC, because for me it's either prerequisite for even being included in the rec list, or the story must have something great to offer in exchange. Like: I don't think you've mentioned Straight!Brian fic (http://community.livejournal.com/_meansfallen/2276.html) by alantie? It has some problems, but it is IC in such a unique way for most of the story and it gives you tons of delicious angst and beautiful imagery for your trouble. Oh my. Yes, your list is very remiss, in many aspects - such as: where's ellyrianna? Haha, I joke. But no, seriously, ellyrianna, where is she? If you haven't read her Thee or Thy Ship, or her doctor!fic do it now now now! Okay, you're right, those are all AUs, but they're perfect examples of *getting* the characters so right they're even recognizable in totally different realities.

Oh man. I always get so worked up by rec posts.