  We consider a model self-energy consisting of an isotropic Fermi liquid term
and a Marginal Fermi liquid term which is anisotropic over the Fermi surface,
vanishing in the same directions as the superconducting gap and the pseudogap.
This model self-energy gives a consistent description of experimental results
from Angle-Dependent Magneto-Resistance (ADMR), specific heat, de Haas-van
Alphen, and measurements of the quasi-particle dispersion near the Fermi
surface from photoemission. In particular, we reconcile the strongly doping
dependent anomalous scattering rate observed in ADMR with the almost doping
independent specific heat.
