A Confederacy of Dunces by John Kennedy Toole is one of my favorite books. I am currently re-reading it.
It is one of the books I decided I couldn't leave behind; mainly because it is so 'off the beaten path' that I felt sure it wouldn't be something I could find in a library.
Here is what wikipedia has to say http://en.wikipedia.org/wiki/A_Confederacy_of_Dunces
It is such a quirky, irreverant, and politically incorrect story that I find myself laughing with guilt at some of the bigotry, and enjoying tremendously the incredible dialogue that takes place. It goes beyond my idea of how people actually interact and react with one another, but the dialogue just seems so possible.
Just had to share!