  A historical review of our understanding of bulges is first presented,
highlighting similarities and differences between bulges and ellipticals. Then,
some topics of current interest are reviewed, bypassing stellar population
questions and focusing on structural and dynamical issues relating bulges and
disks. The topics are: i) the fundamental plane; ii) the evidence for two
classes of bulges, R^1/4 and exponential, and its significance for bulge
formation; iii) the three-dimensional structure of bulges, in particular the
relation between boxy/peanut-shaped bulges and bars; iv) the nuclear properties
of bulges, and their possible effects on bulge dynamics and secular evolution;
and v) the large-scale mass distribution and evidence for dark matter in
bulges. To conclude, new prospects offered by wide-field integral-field
spectroscopy and other instrument developments (space and ground-based) are
discussed.
