It is shown that large percolation-enhanced nonlinear scattering occurs in
metal-dielectric random composites near the percolation threshold. The enha
ncement is due to giant local electric field fluctuations that are extremel
y inhomogeneous and consist of spatially separated sharp peaks, ''hot'' spo
ts, where the local field is greater by many orders of magnitude than the a
pplied field. [S1063-651X(99)00106-3].