  Optical/UV observations provide many constraints on accretion disk models of
AGN which aren't always appreciated by modelers of the X-ray emission (or
sometimes even of the optical/UV emission). The spectral behavior at the Ly
edge, the polarization, the continuum slopes and breaks, and the variability
timescales and phasing all conflict with simple models and strongly constrain
the more Baroque ones. Partial-covering absorbers and microlensing data suggest
that the radiation is not released simply according to where the potential drop
(modified by standard viscous transport) takes place. On the other hand, the
orientation-based unified model is in accord with the K-\alpha inclination
distributions for the AGN spectral classes, basing the latter on the limited
existing data and theoretical understanding.
