Recently, there have been a number of candidates for the gamma-ray burst (GRB)/supernova (SN) connection (see Nomoto et al. 2001 for references). Among the SNe with a possible GRB counterpart, the Type Ic SNe 1998bw and 1997ef are characterised by a very large kinetic explosion energy, E-K greater than or similar to 10(52) erg. This is more than one order of magnitude larger than in typical SNe, so that these objects may be called "hypernovae".