  We review the observational status of the Supernova (SN)/Gamma-Ray Burst
(GRB) connection. In section 2 we provide a short summary of the observational
properties of core-collapse SNe. In sections 3-6 we review the circumstantial
evidences and the direct observations that support the existence of a deep
connection between the death of massive stars and GRBs. Present data suggest
that SNe associated with GRBs form a heterogeneous class of objects including
both bright and faint Hypernovae and perhaps also `standard' Ib/c events. In
section 7, we provide an empirical estimate of the rate of Hypernovae, for a
``MilkyWay-like'' galaxy, of about $\sim 2.6\times 10^{-4}$ yr$^{-1}$ that may
imply the ratio GRB/Hypernovae to be in the range $\sim 0.03-0.7$. In the same
framework we find the ratio GRB/SNe-Ibc to be $\sim 0.008\div 0.05$. In section
8 we discuss the possible existence of a lag between the SN explosion and the
associated gamma-ray event. In the few SN/GRB associations so far discovered
the SN explosions and GRB events appear to go off simultaneously. In section 9
we present the conclusions and highlight the open problems that Swift hopefully
will allow us to solve.
