Oh, I'm so glad you put Achebe next to Conrad! I was going to mention that, and then forgot. Great list, Mandi! I'm also glad you put "Christy" in there. It's much lighter fare than many of the other titles mentioned, but I remember being quite delighted by it. The opening quotation, a poem which I have yet to find the source of has stayed with me for the nine or ten years it's been since I read the novel:

Down in the valley,
The valley so low,
Hang your head over,
Hear the wind blow.
Hear the wind blow, love.
Hear the wind blow.
Hang your head over,
Hear the wind blow.

I heartily agree with all the recommendations given of the books I have read, and I look forward to reading the rest. Great post!