Neutrino masses reveal that there are degrees of freedom and interactions outside those of the minimal standard model. Since their discovery, activities aimed at measuring neutrino properties have increasing in both size and scope. Here, I discuss different types of new phenomena that one can discover and constrain in neutrino experiments. I will concentrate on long-baseline neutrino oscillation experiments but will also comment on searches for new particles at near detectors, supernova neutrinos, and searches for lepton-number violation.
