Reboots of sci-fi universes: not always a good idea. Scalzi's style — and especially his sense of humour — works beautifully in this setting, though. This is an updated Zarathustra with a tighter, more compelling story than the 1962 original. Very good stuff; recommended.
John Scalzi's web site has various excerpts and interviews. And a power ballad. Just in case.
ISBN 0765367033.