  We explore photo-electron spectra (PES) and photo-electron angular
distributions (PAD) of C$_{60}$ with time-dependent density functional theory
(TDDFT) in real time. To simulate experiments in gas phase, we consider
isotropic ensembles of cluster orientations and perform orientation averaging
of the TDDFT calculations. First, we investigate ionization properties of
C$_{60}$ by one-photon processes in the range of VUV energies. The PES map the
energies of the occupied single-particle states, while the weights of the peaks
in PES are given by the depletion of the corresponding level. The different
influences can be disentangled by looking at PES from slightly different photon
frequencies. PAD in the one-photon regime can be characterized by one
parameter, the anisotropy. This single parameter unfolds worthwhile information
when investigating the frequency and state dependences. We also discuss the
case of multi-photon ionization induced by strong infrared laser pulses in
C$_{60}$. In agreement with measurements, we find that the PES show a regular
comb of peaks separated by the photon energy. Our calculations reveal that this
happens because only very few occupied states of C$_{60}$ near the ionization
threshold contribute to emission and that these few states happen to cooperate
filling the same peaks. The PAD show a steady increase of anisotropy with
increasing photon order.
