Trollope: Well, the rest of the Palliser novels are good, though The Eustace Diamonds is my favorite. Of the Barchester novels, I like best Barchester Towers and Framley Parsonage (which is what papersky's Tooth and Claw is based on). Probably my favorite of the standalone novels is He Knew He Was Right.

Have you read any Elizabeth Gaskell? She's a lesser-known but wonderful Victorian novelist, very concerned with social issues. Mary Barton is a good place to start, and I also love her last novel, Wives and Daughters, dearly.