Metaverse scifi from Neal Stephenson
Or, a Young Lady's Illustrated Primer
Live in the future, then build what's missing.
John Scalzi doing what he does best
Marc's list of the best scifi novelists of the early 2000s
Singularity scifi by Charles Stross
Avoid spoilers, just go read it.
Vernor Vinge lives in the future, again
Vernor Vinge's ahead-of-his-time novella
Book One of the Commonwealth Saga (warning: looooong)
Hilarious and touching Star Trek sendup by John Scalzi