  Extended inflation is a promising new approach to implementing the
inflationary universe scenario. This paper reviews recent advances including a
new, more robust mechanism for ending extended inflation, a new prediction for
the density fluctuation spectrum generated by extended inflation, and the
discovery that extended inflation can produce gravitational waves that can
significantly add to the cosmic background anisotropy. Invited Talk at the
Journees Relativistes, Amsterdam, May 14-16, 1992
