Official list to follow, I wrote these as they came out:
SUPPORTING ACTRESS
Amy Adams, Doubt
Penelope Cruz, Vicky Cristina Barcelona
Viola Davis, Doubt
Taraji P. Henson, The Curious Case of Benjamin Button
Marisa Tomei, The Wrestler
SUPPORTING ACTOR
Josh Brolin, Milk
Robert Downey Jr, Tropic Thunder
Philip Seymour Hoffman, Doubt
Heath Ledger, The Dark Knight
Michael Shannon, Revolutionary Road
LEAD ACTRESS
Anne Hathaway, Rachel Getting Married
Angelina Jolie, Changeling
Melissa Leo, Frozen River
Meryl Streep, Doubt
Kate Winslet, The Reader
LEAD ACTOR
Richard Jenkins, The Visitor
Frank Langella, Frost/Nixon
Sean Penn, Milk
Brad Pitt, The Curious Case of Benjamin Button
Mickey Rourke, The Wrestler
DIRECTION
David Fincher, The Curious Case of Benjamin Button
Ron Howard, Frost/Nixon
Gus Van Sant, Milk
Stephen Daldry, The Reader
Danny Boyle, Slumdog Millionaire
ORIGINAL SCREENPLAY
Courtney Hunt, Frozen River
Mike Leigh, Happy-Go-Lucky
Martin McDonough, In Bruges
Dustin Lance Black, Milk
Andrew Stanton & others, Wall-E
ADAPTED SCREENPLAY
Eric Roth & Robin Swicord, The Curious Case of Benjamin Button
John Patrick Shanley, Doubt
Peter Morgan, Frost/Nixon
David Hare, The Reader
Simon Beaufoy, Slumdog Millionaire
FOREIGN FILM
The Bader-Meinhoff Complex (Germany)
The Class (France)
Departures (Japan)
Revanche (Austria)
Waltz With Bashir (Israel)
ANIMATED
Bolt
Kung Fu Panda
Wall-E
BEST PICTURE
The Curious Case of Benjamin Button
Frost/Nixon
Milk
The Reader
Slumdog Millionaire
ART DIRECTION
Changeling
The Curious Case of Benjamin Button
The Dark Knight,
The Duchess
Revolutionary Road
CINEMATOGRAPHY
Tom Stern, Changeling
Claudio Miranda, The Curious Case of Benjamin Button
Wally Pfister, The Dark Knight
Roger Deakins & Chris Menges, The Reader
Anthony Dod Mantle, Slumdog Millionaire
SOUND MIXING
The Curious Case of Benjamin Button
The Dark Knight
Slumdog Millionaire
WALL-E
Wanted
SOUND EDITING
The Dark Knight
Iron Man
Slumdog Millionaire
WALL-E
Wanted
ORIGINAL SCORE
Alexandre Desplat, The Curious Case of Benjamin Button
James Newton Howard, Defiance,
Danny Elfman, Milk
A.R. Rahman, Slumdog Millionaire
Thomas Newman, WALL-E
ORIGINAL SONG
"Down to Earth" from "WALL-E," Peter Gabriel and Thomas Newman
"Jai Ho" from "Slumdog Millionaire," A.R. Rahman and Gulzar
"O Saya" from "Slumdog Millionaire," A.R. Rahman and Maya Arulpragasam.
(incomplete?)
COSTUMES
Australia
The Curious Case of Benjamin Button
The Duchess
Milk
Revolutionary Road
DOCUMENTARY (feature):
"The Betrayal (Nerakhoon),"
"Encounters at the End of the World,"
"The Garden,"
"Man on Wire,"
"Trouble the Water."
DOCUMENTARY (short subject):
"The Conscience of Nhem En,"
"The Final Inch,"
"Smile Pinki,"
"The Witness -- From the Balcony of Room 306."
EDITING
The Curious Case of Benjamin Button
The Dark Knight
Frost/Nixon
Milk
Slumdog Millionaire
MAKEUP
The Curious Case of Benjamin Button
The Dark Knight
Hellboy II: The Golden Army
ANIMATED SHORT
"La Maison en Petits Cubes,"
"Lavatory -- Lovestory,"
"Oktapodi,"
"Presto,"
"This Way Up."
LIVE ACTION SHORT
"Auf der Strecke (On the Line),"
"Manon on the Asphalt,"
"New Boy,"
"The Pig,"
"Spielzeugland (Toyland)."
VISUAL EFFECTS
The Curious Case of Benjamin Button
The Dark Knight
Iron Man