  Line profiles represent an important probe of the geometry and dynamics of
the central accretion engines in AGN. Although a flat disk illuminated from
above can explain the relativistic Fe K alpha line profile in some cases,
current data, plausible disk physics, and future comparison to the iron and
other AGN lines invite some consideration of other geometries. General features
of line profiles calculated fom concave discs, warped discs, thick clumpy
(inflow/outflow) discs, and disks with spiral structure, are briefly
summarized.
