  In this paper, we review some of our ARPES results on the superconducting and
pseudo gaps in Bi2Sr2CaCu2O8+x. We find that optimally and overdoped samples
exhibit a d-wave gap, which closes at the same temperature, Tc, for all k
points. In underdoped samples, a leading edge gap is found up to a temperature
T* > Tc. We find that T* scales with the maximum low temperature gap,
increasing as the doping is reduced. The momentum dependence of the pseudogap
is similar to that of the superconducting gap; however, the pseudogap closes at
different temperatures for different k points.
