After you look up the lyrics to Drake's "Started from the Bottom," you can take a stroll through any book from Genesis all the way to Revelation. It's weird, but also kind of cool because you can search through the good book for cross references to songs and other pieces of pop culture.
Of course, there are plenty of non-hip hop entrieson RapGenius, which is turning into a CliffsNotes for everything. For example, here is the first chapter of Great Expectations. And this is a RapGenius interpretation of the iTunes Terms of Service. How very swag. [RapGenius]