I have officially reached the "obsession" stage of Love and Capes. I now have eight pages (or one-third for you mathies in the audience) left to go. And I'm sorely tempted to start, and maybe finish, page 17 tonight if I can. 
I guess when I hit this stage, I'm pretty set on the finish. There are chunks of the middle where I write something like "put funny stuff about Abby's taxes here" but no real concrete idea what will happen. By page 16, I've already got everything up to and including the dialogue locked in, and it's just kind of going through the motions and I just want it done. In a good way.