Joel Siegel's Oscar Predictions

Who will be this year's Academy Award powerhouse? The Screen Actors Guild voted Reese Witherspoon and Philip Seymour Hoffman as best lead actors, while giving the cast of "Crash" the nod as best ensemble.

But "Brokeback Mountain" was the biggest winner at the Golden Globe awards, and director Ang Lee took honors as filmmaker of the year from the Directors Guild of America.

On the eve of Oscar nominations on Tuesday, "Good Morning America's" Joel Siegel issued his predictions for Oscar nominations.

Best Picture

"Brokeback Mountain"
"Good Night, and Good Luck"
"Walk the Line"
Long Shot: "Munich"

Best Actor

Russell Crowe, "Cinderella Man"
Phillip Seymour Hoffman, "Capote"
Heath Ledger, "Brokeback Mountain"
Joaquin Phoenix, "Walk the Line"
David Strathairn, "Good Night, and Good Luck"
Long Shot: Terrence Howard, "Hustle & Flow"

Best Actress

Dame Judi Dench, "Mrs. Henderson Presents"
Felicity Huffman, "Transamerica"
Charlize Theron, "North Country"
Reese Witherspoon, "Walk the Line"
Ziyi Zhang, "Memoirs of a Geisha"
Long Shot: Keira Knightly, "Pride & Prejudice"

Best Supporting Actor

Don Cheadle, "Crash"
George Clooney, "Syriana"
Matt Dillon, "Crash"
Paul Giamatti, "Cinderella Man"
Jake Gyllenhaal, "Brokeback Mountain
Long Shot: Richard Jenkins, "North Country"

Best Supporting Actress

Amy Adams, "Junebug"
Scarlett Johansson, "Match Point"
Catherine Keener, "Capote"
Rachel Weisz, "The Constant Gardener"
Michelle Williams, "Brokeback Mountain"
Long Shot: Maria Bello, "A History of Violence"

Best Director

George Clooney, "Good Night, and Good Luck"
David Cronenberg, "A History of Violence"
Paul Haggis, "Crash"
Ang Lee, "Brokeback Mountain"
Steven Spielberg, "Munich"
Long Shot: Fernando Meirelles, "The Constant Gardener"