  Gamma-Ray Burst (GRB) explosions from the first generation of stars offer an
exciting opportunity to probe the epoch of reionization. Clues about how and
when the intergalactic medium was ionized can be read off their UV emission
spectrum. Roughly a percent of all GRBs should be strongly gravitationally
lensed by intervening stars. A microlensed lightcurve can be inverted to
reconstruct the surface brightness profile of the GRB image on the sky, with
micro-arcsecond resolution.
