A brief overview of some topics in flavour physics is carried out, illustrating the probing power of flavour, and its role in shedding light on the NP model at work. Following a short discussion of flavour and CP violation in the lepton sector, the anomalous magnetic moments of charged leptons are revisited. Subsequently, several
hadronic observables are discussed, with a particular focus on tensions related to B-meson decays. A few examples of ambitious NP models aiming at addressing the flavour problem(s) are also considered.
(The topics selected do not aim at providing a full comprehensive overview of quark and lepton flavour physics; they rather consist in a small subset, complying with time requirements, and reflect a personal viewpoint.)