F. Scott Fitzgerald's The Great Gatsby: I-IV

I: Fitzgerald's opener gives the reader a good feel for what kind of character the narrator (Nick Carroway) is going to be-- that is, a mostly detached observer. That Nick is detached, however, does not make him uninteresting. In fact, he is a very interesting character, and through him, Fitzgerald produced one of the most vivid "voices" in all of literature.
II: I think that it's very revealing of Tom's character that he is so open about keeping a mistress, even introducing her to his wife's cousin. Fitzgerald makes it incredibly difficult to feel anything but malice towards Tom, thus making it easy to root for Gatsby later in the book.
III: This chapter is so vivid with detail that the reader can truly feel the excitement of the party. Also of interest in this chapter is the gossip spread among the guests.
IV: I enjoyed the bit about one man rigging the entire 1919 Fall Classic. I also found Jordan Baker's story particularly interesting, as it developed Gatsby's character without him even being present.