  Observations of gamma-ray burst (GRB) afterglows have yielded tantalizing
hints that supernovae (SNe) and GRBs are related. The case had been
circumstantial, though, relying on irregularities in the light curve or the
colors of the afterglow. I will present observations of the optical afterglow
of GRB 030329. The early spectra show a power-law continuum, consistent with
other GRB afterglows. After approximately one week, broad peaks in the spectrum
developed that were remarkably similar to those seen in the spectra of the
peculiar Type Ic SN 1998bw. This is the first direct, spectroscopic
confirmation that at least some GRBs arise from SNe.
