  We review the recent developments in applying holographic methods to
understand non-equilibrium physics in strongly coupled field theories. The
emphasis will be on elucidating the relation between evolution of quantum field
theories perturbed away from equilibrium and the dual picture of dynamics of
classical fields in black hole backgrounds. In particular, we discuss the
linear response regime, the hydrodynamic regime and finally the non-linear
regime of interacting quantum systems. We also describe how the duality might
be used to learn some salient aspects of black hole physics in terms of field
theory observables.
