A variety of electron emission processes have been studied in detail for both atomic and molecular systems, using a highly efficient experimental system comprising two time-of-flight (TOF) rotatable electron energy analyzers and a 3rd generation synchrotron light source. Two examples are used here to illustrate the obtained results. Firstly, electron emission in the HCl molecule have been mapped over a 14 eV wide photon energy range over the Cl 2p ionization thresholds. Particular attention is paid to the dissociative core-excited states, for which the Auger electron emission shows photon energy dependent features. Also, the evolution of resonant Auger to the normal Auger decay distorted by post collision interaction has been observed and the resonating behavior of the valence photoelectron lines studied. Secondly, an atomic system, neon, in which excitation of doubly excited states and their subsequent decay to various accessible ionic states has been studied. Since these processes only occur via inter-electron correlations, the many-body dynamics of an atom can be probed. Electron angular distributions following the decay of certain resonances to a parity-unfavored continuum exhibits significant deviation from LS coupling predictions, which is surprising for such a light atom. ©1998 American Institute of Physics.