When I was in 11th grade, I had to read Grapes of Wrath. It wasn't my favorite book of the year, but I enjoyed it, and you can certainly learn a lot from it about writing. But that's not what I'm thinking about now.
For me, the book really began with the third chapter In Which A Turtle Crosses a Road.
Okay, everyone who's familiar with that book is probably thinking, 'Wait, I don't remember that chapter.' And, you're right. There was no chapter with that name. In fact, none of the chapters have names. But when I reached the third chapter, I started naming the chapters myself. It was fun. (I named Chapter 14 In Which There Is Manself. :D)
My favorite book for chapter titles is probably Stardust by Neil Gaimen. They were so funny, without giving away too much of the chapter. My favorite: Chapter Three In Which We Meet Many People, Most of Them Alive, Who Have An Interest In The Fate Of The Fallen Star.
Yeah, I like chapter titles. Oddly enough, though, I don't use them. I wish I did, because I love them so much, but they never occur to me as I'm going.
How about you? How do you feel about chapter titles? Any favorites, in a book or a book with them? Do you title your chapters?