EN
β-NMR experiments with hyperpolarized ^8Li adsorbed on semiconductor and metal surfaces are described (adsorption on Si(111)-(7×7), Si(111)-H, Si(111)-(1×1):H, Ru(001)). They yield detailed information on the electronic properties of these adsorbate-surface systems. Briefly a scenario using hyperpolarized Xe isotopes is sketched, which will extend the potential of the use of hyperpolarized species in NMR experiments on surfaces.