  The electron spin transport in condensed matter, Spintronics, is a subject of
rapidly growing interest both scientifically and from the point of view of
applications to modern and future electronics. In many cases the electron spin
transport cannot be described adequately without accounting for the hyperfine
interaction between electron and nuclear spins. Under extreme conditions of
high magnetic fileds, ultra-low temperatures, ultra high isotopical cleanness
etc., the nuclear spins in these sytems are very promizing candidates for the
qubits: the basic elements of emerging quantum memory, logics and hopefully
quantum computers.
  Here we review the progress in the Nuclear Spintronics i.e. in physics and
applications of hyperfine interactions in such exotic systems, as
superconducting, quantum Hall, mesoscopic and nano-systems.
