  The Fermi surface anisotropy of a pseudo-gap in the spectral weight, caused
by superconducting fluctuations or anti-ferromagnetic fluctuations, is
calculated for a tight binding band. The importance of the Fermi surface saddle
point, or hot spot, is illustrated. A peak-dip-hump structure due to a finite
frequency mode, is briefly explored. The connection to high temperature
superconducting copper-oxides is discussed.
