The dynamics of rotating black holes

After an introductory overview of standard results for perturbed black hole s (regarding quasinormal modes and power-law tails) we focus on three issue s of recent interest. We discuss the possibility that the new generation of gravitational-wave detectors that are due to come online in the near futur e will be able to do "black-hole spectrocopy" by inferring black-hole param eters from quasinormal-mode signals. We summarise the recent effort to stud y perturbation of Kerr black holes using time-evolutions of the Teukolsky e quation, and finally we present recent results that seem to indicate the ex istence of a new superradiance related phenomenon for rapidly spinning blac k holes.