We review some of our recent angle-resolved photoemission results on Bi2Sr2
CaCu2O8, as a function of doping. We find that the Fermi surface is progres
sively destroyed as the temperature is lowered below the pseudogap temperat
ure T* Furthermore, the superconducting gap behaves quite differently at di
fferent k-points. All of these results point to a non-mean-held behavior of
the superconducting transition. (C) 1999 Published by Elsevier Science B.V
. All rights reserved.