As far as SF goes today, it's fresher than it's ever been to me, tho' it is just as tough to find novels that don't have space battles/bug-eyed monsters/and those scantily clad space wenches. With our world changing so quickly, it takes some kind of radical new ideas to inject new life into a form that may as well be embedded in amber most of the time.
I like the Cyberpunks: William Gibson, Bruce Sterling (man, is this guy funny! And he keeps throwing out the ideas at quite a pace), Rudy Rucker (The Hunter S. Thompson of Rock & Roll Sci-Fi, read his 'Ware tetralogy),
Neal Stephenson was solid gold for awhile, but now has sadly ditched the cool ideas and is aiming more for the New York Times Bestseller List, meh. However, I second the motion to call Snow Crash a classic, as well as The Diamond Age and (for geeks) Cryptonomicon.
Kim Stanley Robinson imbues his work with a sense of spirituality, and adds architecture, ecology and love of nature, plus a healthy dose of politics. Try his DC trilogy, which puts global warming front-and-center.
Corey Doctorow put me off at first, but his books of the past 5 or so years really grabbed me, they are political novels aimed at the Young Adult market, yet still remain exciting for adults. Little Brother, its sequel Homeland, For The Win, and Pirate Cinema all kick serious ass, and as a bonus, some of them teach us a few tech tricks.
Funhouse Skull said:
Wow. I see I'm joining this party a little late, but what the fuck? Science fiction is without a doubt my favorite genre in both literature & film. The drawback to SF in film is that fans are frequently given short shrift as the perception is we will accept anything as long as it includes bug-eyed monsters & scantily clad space wenches.
But I digress.
I'd like to first establish that I am on board with Harlan Ellison's revised definition of SF as "speculative fiction" as this broadens the imaginary limits of the genre by opening possibilities outside the interstellar travel / alien invasion / dystopian society / post-apocalyptic / science gone awry tropes that dominated the genre many years. Not that there's anything wrong with exploring these domains. That said, my favorite SF novels are:
A Clockwork Orange - ANTHONY BURGESS
Logan's Run - WILLIAM F. NOLAN & GEORGE CLAYTON JOHNSON
A Canticle For Leibowitz -WALTER M. MILLER, JR.
The Sirens Of Titan - KURT VONNEGUT, JR.
Starship Troopers - ROBERT A. HEINLEIN
The Lathe Of Heaven - URSULA K. LE GUIN
Creatures Of Light And Darkness - ROGER ZELAZNY
The Road - CORMAC McCARTHY
Damnation Alley - ROGER ZELAZNY
The Lost Traveller - STEVE WILSON