Sure. 'To Kill a Mockingbird' is often considered a great one. It's a classic that deals with themes like racism and justice in a small Southern town.
Another one could be '1984'. It's a dystopian novel that warns about totalitarianism and the loss of privacy and freedom. The world it creates is both terrifying and thought - provoking.
The Great Gatsby is also among the notable ones. It's a story of love, wealth, and the American Dream in the 1920s. The characters are complex and the writing is beautiful, exploring themes of class, love, and disillusionment.