This is an intriguing, absorbing, fascinating, believable look at what could happen to Snape after the Battle of Hogwarts.
To be honest, I debated about reading this story, because of the pairing, the length, and most of all, because a quick glance showed Harry/Ginny as an implied pairing. (It's one of my very few pairing squicks.)
I'm really really really really glad that I ignored myself and read it. :)
I'm not sure I have a favourite moment, so to speak, but the scene where Snape takes on Ron for his homophobia will stay with me for a while, as will the moment when Snape blinked.