  The HI Parkes All-Sky Survey (HIPASS) gives an unprecedented view of the
local large-scale structures in the southern sky. I will review the results
from the HIPASS Bright Galaxy Catalog (BGC, Koribalski et al. 2004) and the
first version of the deep catalog (HICAT, Meyer et al. 2004) with particular
emphasis on galaxy structures across the Zone of Avoidance. Some previously
hardly noticed galaxy groups stand out quite distinctively in the HI sky
distribution and several large-scale structures are seen for the first time.
Because HI surveys preferentially detect late-type spiral and dwarf galaxies,
their distribution is less clustered than that of optically selected galaxies.
HI surveys also significantly enhance the connectivity of large-scale filaments
by filling in gaps populated by gas-rich galaxies.
