Dozois' annual compilation continues to feature a comprehensive and well-balanced selection of the best writing in the sf field. This year, the editor finds room for 590 pages of fiction--including nine finalists for either the Hugo or Nebula awards. Not surprisingly, the collection offers plenty of variety. Connie Willis' ""At the Rialto"" has already won a Nebula for best novelette; it is best described as a hard-science-fantasy screwball comedy set in Hollywood. Lucius Shepard weighs in with ""The Ends of the Earth,"" a dark piece of magical realism set in Central America, and Bruce Sterling shows the cyberpunk flag in ""Dori Bangs."" We hear from the old pros (Robert Silverberg, Avram Davidson), from today's major stars (Gregory Benford, John Crowley, John Varley), and an impressive cross-section of newer talent (Judith Moffett, Steven Popkes, and Megan Lindholm). Inevitably, some pieces are less impressive than others, but anyone who likes sf at all will find plenty of good reading here. If you're going to buy only one sf book this year, this is the one to buy; if you're an avid fan, consider it indispensable.