I will discuss the current status and projected future of CMB
experiments and the cosmic parameters derived from them, including
the very recent ACBAR release which exquisitely maps the damping
tail associated with shear viscosity at photon decoupling. I will
describe what theory allows and what it prefers for the ensemble of
acceleration trajectories then - in the early universe - and now.
And how they are constrained by the data now, and will be then,
from ACT, SPT, Planck, Spider and a host of other CMB experiments.