Most Active Galactic Nuclei (AGN) are characterized by the presence of broad emission lines. However the AGN definition includes a wide range of phenomenologies, both radio-loud and radio-quiet. We report on exciting new developments that unify all classes of AGN showing broad lines. Correlations in this "Eigenvector 1" parameter space appear to be driven primarily by the accretion rate onto the supermassive black holes that power these sources.