  Some open topics in the field of low energy photon-nucleon interactions are
discussed--which in my opinion are of interest both for obtaining new
information on nucleon structure as well as for precision tests of our
theoretical understanding of chiral dynamics. In particular, I discuss p-wave
multipoles in charged pion photoproduction off protons as well as the role of
spin-dependent effects in (unpolarized) Compton scattering off nucleons. There
the concept of dynamical spin polarizabilities is found to be essential for the
understanding of differential Compton cross sections above 120 MeV cms photon
energy.
