  Knowledge on nuclear cluster physics has increased considerably since the
pioneering discovery of 12C+12C resonances half a century ago and nuclear
clustering remains one of the most fruitful domains of nuclear physics, facing
some of the greatest challenges and opportunities in the years ahead. The
occurrence of "exotic" shapes and/or Bose-Einstein alpha condensates in light
N-Z alpha-conjugate nuclei is investigated. Evolution of clustering from
stability to the drip-lines examined with clustering aspects persisting in
light neutron-rich nuclei is consistent with the extension of the
"Ikeda-diagram" to non alpha-conjugate nuclei.
