  Neutrino mass and mixing are amongst the major discoveries of recent years.
  From the observation of flavor change in solar and atmospheric neutrino
experiments to the measurements of neutrino mixing with terrestrial neutrinos,
recent experiments have provided consistent and compelling evidence for the
mixing of massive neutrinos. The discoveries at Super-Kamiokande, SNO, and
KamLAND have solved the long-standing solar neutrino problem and demand that we
make the first significant revision of the Standard Model in decades. Searches
for neutrinoless double-beta decay probe the particle nature of neutrinos and
continue to place limits on the effective mass of the neutrino. Possible signs
of neutrinoless double-beta decay will stimulate neutrino mass searches in the
next decade and beyond. I review the recent discoveries in neutrino physics and
the current evidence for massive neutrinos.
