  We review recent examples where the synergy between radio and X-ray
observations has led to substantial progress in understanding astronomical
systems. The sub-arcsecond imaging capabilities of the Chandra X-ray
observatory provides a 100-fold improvement for comparing X-ray and radio
structures. We specifically discuss examples which provide insight into the
outflow of material and energy from pulsars and supernovae, the centers of
clusters of galaxies, and the nuclei of quasars.
