Okay, my favorite and non-favorite chapters:Twilight
Favorites: "Blood Type," because it's where the Bella/Edward connection really starts to click, "Theory," because it's where the big secret comes out, and "Impatience," because I love the Jasper/Alice/Bella interaction and because it's where Bella and Alice start to really connect.
Least Favorite: A bit hard to say--maybe "The Game." The baseball sequence doesn't really crackle like it did in the movie (the one time where the movie is definitely better than the book).New Moon
Favorites: I really like the whole sequence from "Visitor," where Alice shows up at Bella's home, to the end of the book. Special favorites include "Visitor" itself, just because Alice returning gives me almost as much of an emotional boost as it gives Bella, and "Vote," because I like the dynamics of the group interaction (something Stephenie does quite well).
Least Favorite: "The End" is really hard to reread, not because it's poorly written or anything, but because Bella's pain in this chapter is almost impossible to bear, and because it shows Edward at his very worst. Also, "Waking Up," because any scene that can make me start to sympathize with Jessica has a serious weirdness problem.
Favorites: I like virtually the whole book. Special favorites include "Unhappy Ending," with Rosalie's story and a sort-of peace between her and Bella, "Newborn," with Jasper's story, "Fire and Ice," because of the best look inside Edward's head this side of Midnight Sun, and "Compromise," because Bella says "yes."
Least Favorite: I'm not especially fond of "Monster."Breaking Dawn
Favorites: I have definite mixed feelings about the book as a whole, but some chapters are very nice. "Engaged" through "Big Day" is a lovely sequence. I also actually like quite a lot of Jacob's chapters (11-16, to be precise--most of the titles are too long to bother with), even though I'm not a big fan of his, because I am a fan of Seth and Leah and we get to spend with them. Especially Seth
And the final confrontation with the Volturi is pretty good; I can enjoy a face off that is more intellectual than physical if it's written well.
Least Favorites: "Unexpected," and Chapter 18 (Jacob imprints), because that whole story-line was such a deux ex machina resolution to the love triangle. Chapter 17 (Jacob goes cruising in the Vanquish), for general weirdness. The sequence of chapters where the vampire witnesses assemble and plan (30-35) kind of drags; that segment could have been written more tightly.
"May the hinges of friendship never rust, nor the wings of love lose a feather"--Scottish blessing