I'd quickly add:
- The Way We Live Now by Anthony Trollope. Speculative finance and moral bankruptcy. [I've just started it. The novel, that is.]
- The Road by Cormac MacCarthy. Post-disaster journey. Father. Son. Cannibals.
- A Man in Full by Tom Wolfe. A great intro to Epictetus. Go Stoic!
- Atlas Shrugged by Ayn Rand. A hard slog with wooden characters, but its sales have shot up and people talk of "going John Galt."