The superfluid model of large amplitude nuclear motion allows for a unified description of the variety of tunneling phenomena found in nuclear physics. The model will be shown to provide a quantitative account of exotic decay, of the depopulation of superdeformed bands, of the restoration of the parity in octupole deformed nuclei, of the decay of K-isomers in rapidly rotating nuclei and of the energy of coexistence for spherical and deformed states in light and medium heavy nuclei as well as the energy systematics of low-lying surface vibrations in nuclei. It will be concluded that plastic nuclear behaviour is intimately connected with nuclear superfluid tunneling. The model is also applied to the Coulomb explosion of sodium metal clusters.