  We have surveyed leptonic and grand unified models of neutrino masses and
mixings in the literature which are still viable and give numerical predictions
for the reactor angle, $\theta_{13}$. The results are of considerable interest
in anticipation of the next generation reactor experiments and the possible
future need for neutrino factories. Of the 63 models considered which were
published or posted on the Archive before June 2006, half predict values of
$\sin^2 2\theta_{13} \gsim 0.015$, which should yield positive signals for
$\bar{\nu}_e$ disappearance in the reactor experiments planned for the near
future. Depending upon the outcome of those experiments, half of the models can
be eliminated on the basis of the presence or absence of such an observed
$\bar{\nu}_e$ disappearance signal.
