  We are moving into an era of precision measurements of neutrino mixing, and
it is increasingly necessary to use a 3-flavor framework to describe the
results. This paper will focus on recent results from long-baseline neutrino
experiments, especially accelerator-based beams. Using $\nu_{\mu}$ beams, we
have now observed the disappearance of $\nu_{\mu}$, and the appearance of both
$\nu_{e}$ and $\nu_{\tau}$. It will also briefly describe some of the
long-baseline experiments that have recently started operation, from which data
are expected soon.
