Titles are in quotation marks since I'm too stupid/lazy/don't know how to make them italics
Graphic novels:
-Neil Gaiman's "Sandman" series is fantabulous, as is anything the man writes. (although "The Graveyard Book" left me a little unsatisfied)
-"Wormwood: Gentlemen Corpse" by Ben Templesmith is gross and funny and bizarro
-"Death Note" by Tsugumi Ohba
-"Petshop of Horrors" by Matsuri Akino
Books:
-"Heart of Darkness" by Joseph Conrad
-"The Hitchiker's Guide to the Galaxy" by Douglas Adams
-"The Belgariad" by David Eddings (first book in series is called "Pawn of Prophecy")
-"The Chronicles of Narnia" series by C.S. Lewis (first book is "The Magician's Nephew")
-"Maximum Ride: The Angel Experiment" by James Patterson (first book in the "Maximum Ride" series)
-Harry Potter series by J.K. Rowling (first book: "Harry Potter and the Sorcerer's Stone" or "Harry Potter and the Philosopher's Stone" if in Europe)
Don't mess with that Twilight shit. It will rot your brain. If you want vampires, read "Dracula" by Bram Stoker or "Interview with the Vampire" by Anne Rice or even read "Hellsing" by Kohta Hirano. Anything, just don't read Twilight. Or, you can just suffer through it to say you've read it like I did, throw it in a dark musty closet, and never speak of it again.
Edit: It would help if I read, haha. Sci-fi, hmm?
Try these:
http://www.slcl.org/teens/teenreads/fan_sci.htm
Aren't libraries the best! *Cheesy thumbs up*