Founded by the Science Fiction Writers of America (SFWA), shortly after its creation in 1965, the awards are given to the best novel, novella, novelette, short story, and script.

2008 Winners 

Novel

Powers, by Ursula Le Guin

Best Novella 

"Spacetime Pool", by Catherine Asaro

Novelette

"Pride and Prometheus", by John Kessel

Short Story

"Trophy Wives", by Nina Kiriki Hoffman

Script

WALL-E Screenplay by Andrew Stanton, Jim Reardon, Original story by Andrew Stanton, Pete Docter

Andre Norton Award

How a Girl of Spriit Gambles All to Expand Her Vocabulary, Confron a Bouncing Boy Terror, and Try to Save Califa from a Shaky Doom, by Ysabeau S. Wilce

Nebula Awards Website