  The recent results from a deep Fabry-Perot survey of nearby active and
star-forming galaxies are presented. Line-emitting material is detected over
two orders of magnitude in galactocentric radius, from the 100-pc scale of the
active or starbursting nucleus out to several 10s of kpc, sometimes well beyond
the optical confines of the host galaxies. The excitation and dynamical
properties of the nuclear gas are studied to constrain the impact of galactic
winds on the host galaxies and their environment. The properties of the warm
ionized material on the outskirts of galaxies provide important clues for
understanding galaxy formation and evolution. A new technique to search for
starburst-driven wind galaxy candidates is discussed. The next generation of
Fabry-Perot instruments on large telescopes promises to improve the sensitivity
of emission-line galaxy surveys at least tenfold.
