If not necessarily a moral virtue, T.I.'s arrogance is at least an artistic asset. No rapper since Jay-Z has been so adept at super suave self-promotion ("King Back") and generalized trash-talking ("I'm Talking to You"). The secret is that T.I. cuts his braggadocio with liberal doses of humor, and having super-producers Just Blaze and Swizz Beats on your side doesn't hurt.