  A new class of X-ray sources was clearly established with the discovery of
highly relativistic radio jets from the galactic sources GRS 1915+105 and GRO
J1655-40. Both of these objects have given us a broader view of black holes and
the formation of jets, yet they also show the complexity of the accretion
environment near relativistic objects. The fast apparent motion of the jets,
their luminosity and variability, their high energy spectrum, and approximate
scaling to the behavior of active galactic nuclei, certainly warrant the
description "microquasar". I present a review of the observational data on
these sources, and discuss where we stand on a physical picture of GRS 1915+105
and GRO J1655-40 as taken from multi-wavelength studies. I also point out other
galactic sources which share some of the properties of the microquasars, and
what to look for as a high energy "signature" in future observations.
