The preparation of C-60 films on electrodes by drop coating, Langmuir-Blodgett and electrochemical techniques, and the electrochemical behavior of these films in acetonitrile solutions containing a variety of supporting electrolytes (e.g., quaternary ammonium, alkali metal, and alkaline earth salts) is reviewed. Reduction can form insoluble films with incorporated cations or lead to dissolution. The large splitting between cathodic and anodic waves is discussed in terms of structural rearrangements during the redox processes. Studies of C-60 electrodes with the quartz crystal microbalance and with the scanning electrochemical microscope, and by laser-desorption mass spectrometry and surface-enhanced Raman scattering are also discussed.