I assume most philsophers, even wildly successful philosophers, think they wrote an excellent paper that did not get the attention it deserved. I would ask folks to mention papers by themselves or by others that they think have been unjustly overlooked or that did not get the attention it deserved. Such papers should be at least 5 years old. Please don't bother mentioning famous papers that you think should be even more famous. Please limit yourself to one paper of your own.
I'll start with Peter Railton's "Locke, Stock, and Peril".