Despite my best attempts, even I didn't see all that many of the films nominated. (I could argue that I don't generally like the films that the Academy seems to go for, but, whatever.) here's my vaguely-educated guesses.
The big list available here.
BEST PICTURE
"The Aviator", "Finding Neverland", "Million Dollar Baby", "Ray", "Sideways"
* Who will get it? "Ray"
* Who I wish would get it? "Finding Neverland"
* Who should have been nominated? "Eternal Sunshine of the Spotless Mind, The Incredibles".
DIRECTOR
Clint Eastwood, "Million Dollar Baby"
Taylor Hackford, "Ray"
Alexander Payne, "Sideways"
Mike Leigh, "Vera Drake"
* Who will get it? Martin Scorsese, "The Aviator"
* Who I wish would get it? Alexander Payne, "Sideways"
* Who should have been nominated? Michel Gondry, "Eternal Sunshine of the Spotless Mind"
ACTOR IN A LEADING ROLE
Don Cheadle, "Hotel Rwanda"
Johnny Depp, "Finding Neverland"
Leonardo DiCaprio, "The Aviator"
Clint Eastwood, "Million Dollar Baby"
Jamie Foxx, "Ray"
* Who will get it? Jamie Foxx, "Ray"
* Who I wish would get it? Don Cheadle, "Hotel Rwanda". I'm a Don Cheadle mark.
* Who should have been nominated? There was a good story on NPR that mentioned how thick the Best Actor category was this year. There were seriously fifteen roles that could have been picked. Nonetheless, I'd like to have seen Jim Carrey get the nomination for "Eternal Sunshine of the Spotless Mind". Not that I think he should have won it. But it would encourage him to take more serious roles.
ACTRESS IN A LEADING ROLE
Annette Bening, "Being Julia"
Catalina Sandino Moreno, "Maria Full of Grace"
Imelda Staunton, "Vera Drake"
Hilary Swank, "Million Dollar Baby"
Kate Winslet, "Eternal Sunshine of the Spotless Mind"
* Who will get it? No idea. Let's guess Annette Bening, "Being Julia"
* Who I wish would get it? Kate Winslet, "Eternal Sunshine of the Spotless Mind"
* Who should have been nominated? Holly Hunter, "The Incredibles" That NPR story I mentioned above was primarily about how few choices there were for Best Actress this year, because there just weren't that many good roles for women.
ACTOR IN A SUPPORTING ROLE
Alan Alda, "The Aviator"
Thomas Haden Church, "Sideways"
Jamie Foxx, "Collateral"
Morgan Freeman, "Million Dollar Baby"
Clive Owen, "Closer"
* Who will get it? Morgan Freeman, "Million Dollar Baby"
* Who I wish would get it? Thomas Haden Church, "Sideways" WINGS REPRESENT
* Who should have been nominated? Alfred Molina, "Spider-man 2"
ACTRESS IN A SUPPORTING ROLE
Cate Blanchett, "The Aviator"
Laura Linney, "Kinsey"
Virginia Madsen, "Sideways"
Sophie Okendo, "Hotel Rwanda"
Natalie Portman, "Closer"
* Who will get it? Cate Blanchett, "The Aviator"
* Who I wish would get it? Laura Linney, "Kinsey"
* Who should have been nominated? Tina Fey, "Mean Girls"
ORIGINAL SCREENPLAY
John Logan, "The Aviator"
Charlie Kaufman, Michel Gondry and Pierre Bismuth, "Eternal Sunshine of the Spotless Mind"
Keir Pearson and Terry George, "Hotel Rwanda"
Brad Bird, "The Incredibles"
Mike Leigh, "Vera Drake"
* Who will get it? John Logan, "The Aviator"
* Who I wish would get it? Brad Bird, "The Incredibles"
* Who should have been nominated? "I Heart Huckabees" was totally robbed.
ADAPTED SCREENPLAY
Richard Linklater, Julie Delpy, Ethan Hawke and Kim Krizan, "Before Sunset"
David Magee, "Finding Neverland"
Paul Haggis, "Million Dollar Baby"
José Rivera, "The Motorcycle Diaries"
Alexander Payne and Jim Taylor, "Sideways"
* Who will get it? "Sideways" or "Finding Neverland"
* Who I wish would get it? José Rivera, "The Motorcycle Diaries"
* Who should have been nominated? "Tina Fey", Mean Girls. Seriously.
FOREIGN LANGUAGE FILM
"As It Is in Heaven" (Sweden)
"The Chorus" (France)
"Downfall" (Germany)
"The Sea Inside" (Spain)
"Yesterday" (South Africa)
* Who will get it? No clue. Guessing "The Sea Inside".
* Who I wish would get it? Haven't seen any.
* Who should have been nominated? "House of Flying Daggers" was totally robbed.
ANIMATED FEATURE
"The Incredibles"
"Shark Tale"
"Shrek 2"
* Who will get it? "The Incredibles"
* Who I wish would get it? "The Incredibles"
* Who should have been nominated? n/a
ORIGINAL SCORE
Jan A.P. Kaczmarek, "Finding Neverland"
John Williams, "Harry Potter and the Prisoner of Azkaban"
Thomas Newman, "Lemony Snicket's A Series of Unfortunate Events"
John Debney, "The Passion of the Christ"
James Newton Howard, "The Village"
* Who will get it? John Debney, "The Passion of the Christ"
* Who I wish would get it? Ehn. Jan A.P. Kaczmarek, "Finding Neverland"
* Who should have been nominated? Hmmm. "I Heart Huckabees"
ORIGINAL SONG
Whatever. no one cares.
ART DIRECTION
"The Aviator", "Finding Neverland", "Lemony Snicket's A Series of Unfortunate Events", "The Phantom of the Opera", "A Very Long Engagement"
* Who will get it? "The Phantom of the Opera"
* Who I wish would get it? Haven't seen enough to judge.
* Who should have been nominated? "Ghost in the Shell: Innocence" or, say, "The Incredibles"
CINEMATOGRAPHY
"The Aviator", "House of Flying Daggers", "The Passion of the Christ", "The Phantom of the Opera", "A Very Long Engagement"
* Who will get it? "The Aviator"
* Who I wish would get it? "House of Flying Daggers"
* Who should have been nominated? Um.
COSTUME DESIGN
"The Aviator", "Finding Neverland", "Lemony Snicket's A Series of Unfortunate Events", "Ray", "Troy"
* Who will get it? "Troy"
* Who I wish would get it? "Lemony Snicket's A Series of Unfortunate Events"
* Who should have been nominated? "House of Flying Daggers" FLYING SLEEVES RULE. Also, "The Village"
MAKEUP
"Lemony Snicket's A Series of Unfortunate Events", "The Passion of the Christ", "The Sea Inside"
* Who will get it? "Lemony Snicket's A Series of Unfortunate Events"
* Who I wish would get it? No idea. "The Passion of the Christ"
* Who should have been nominated? "The Phantom of the Opera"
DOCUMENTARY FEATURE
"Born Into Brothels", "The Story of the Weeping Camel", "Super Size Me", "Tupac: Resurrection", "Twist of Faith"
* Who will get it? "Super Size Me"
* Who I wish would get it? "Super Size Me"
* Who should have been nominated? "Fahrenheit 9/11" Love it or hate it, it broke records for a reason.
SOUND MIXING
"The Aviator", "The Incredibles", "The Polar Express", "Ray", "Spider-Man 2"
* Who will get it? "Spider-Man 2"
* Who I wish would get it? "The Incredibles"
* Who should have been nominated? "The Village"
SOUND EDITING
"The Incredibles", "The Polar Express", "Spider-Man 2"
* Who will get it? "The Incredibles"
* Who I wish would get it? "Spider-Man 2"
* Who should have been nominated? "Eternal Sunshine of the Spotless Mind"
VISUAL EFFECTS
"Harry Potter and the Prisoner of Azkaban", "I, Robot", "Spider-Man 2"
* Who will get it? "Spider-Man 2"
* Who I wish would get it? "Spider-Man 2"
* Who should have been nominated? "Sky Captain and the World of Tomorrow", actually robbed.
FILM EDITING
"The Aviator", "Collateral", "Finding Neverland", "Million Dollar Baby", "Ray"
* Who will get it? Haven't seen enough to judge. Guessing "Collateral"
* Who I wish would get it? Haven't seen enough to judge.
* Who should have been nominated? "Eternal Sunshine of the Spotless Mind"
...and I'm not doing anything involving short films, or the other obscure ones I have no firsthand knowledge of.