This lecture explores the concept of black hole superradiance, where waves are amplified by absorbing rotating bodies. It discusses the consequences of this phenomenon, such as the emission of gravitational waves and the potential to detect ultra-light fields beyond the Standard Model. The lecture also delves into the quenching mechanisms of photon superradiance and the observational implications in the Cosmic Microwave Background. The presentation concludes with a verdict on the feasibility of using superradiance as a tool to detect light bosons and the potential impact on the surrounding environment.