The discovery of high redshift radio galaxies at z ≤ 4 has unleashed a host of questions about their nature. Many new objects are being found, and their unusual properties are being uncovered. They generally exhibit the “alignment effect”, wherein their highly elongated lumpy morphologies are lined up along the axes of their powerful radio sources. Evidence for both large star formation rates and scattered quasar light are found in the aligned blue continuum. The aligned infrared continuum is more likely to be dominated by starlight. The K-band Hubble diagram for radio galaxies is now extended to z ~ 4, but it will be difficult to use it to test different cosmological world models.