Leonardo DiCaprio
Ronald Asadorian/Splash/Newscom
In contrast, he'll compete against himself at the Golden Globes, where he's nominated as a leading actor in both movies.
Also up for leading actor in a movie: Ryan Gosling (for Half Nelson), Peter O'Toole (Venus), Will Smith (The Pursuit of Happyness) and Forest Whitaker (The Last King of Scotland).
Leading actress nominees are Penelope Cruz (Volver), Judi Dench (Notes on a Scandal), Helen Mirren (The Queen), Meryl Streep (The Devil Wears Prada) and Kate Winslet (Little Children).
Since the SAG Awards were launched in 1994, they've established a strong track record as an Oscar predictor. In the past years, SAG accurately called eight lead actor Academy Award winners, nine lead actress winners and half the supporting actor and actress races, the Los Angeles Times reports.
Up for outstanding movie ensemble are the casts of Babel, Bobby, The Departed, Dreamgirls and Little Miss Sunshine.
For television, best drama ensemble nominees are 24, Boston Legal, Deadwood, Grey's Anatomy and The Sopranos. Best comedy ensemble nods went to Desperate Housewives, Entourage, The Office, Ugly Betty and Weeds.
Sandra Oh, who stars on Grey's Anatomy, tells PEOPLE she's thrilled with the show's nomination. "I don't want to put a bias on it, but I think the ensemble awards are kind of the best," she said Thursday. "To get a great ensemble together, that works well together is really, really hard."
The SAGs will air live on TNT and TBS on Sunday, Jan. 28, at 8 p.m. ET/PT. PEOPLE and the Entertainment Foundation will sponsor the official SAG Awards Gala after the show.
A complete list of nominations follows:
MOTION PICTURES
MALE ACTOR IN LEADING ROLE
• Leonardo DiCaprio, Blood Diamond
• Ryan Gosling, Half Nelson
• Peter O'Toole, Venus
• Will Smith, The Pursuit of Happyness
• Forest Whitaker, The Last King of Scotland
FEMALE ACTOR IN LEADING ROLE
• Penelope Cruz, Volver
• Judi Dench, Notes on a Scandal
• Helen Mirren, The Queen
• Meryl Streep, The Devil Wears Prada
• Kate Winslet, Little Children
MALE ACTOR IN SUPPORTING ROLE
• Alan Arkin, Little Miss Sunshine
• Leonardo DiCaprio, The Departed
• Jackie Earle Haley, Little Children
• Djimon Hounsou, Blood Diamond
• Eddie Murphy, Dreamgirls
FEMALE ACTOR IN SUPPORTING ROLE
• Adriana Barraza, Babel
• Cate Blanchett, Notes on a Scandal
• Abigail Breslin, Little Miss Sunshine
• Jennifer Hudson, Dreamgirls
• Rinko Kikuchi, Babel
CAST IN A MOTION PICTURE
• Babel
• Bobby
• The Departed
• Dreamgirls
• Little Miss Sunshine
PRIMETIME TELEVISION
MALE ACTOR IN TELEVISION MOVIE/MINISERIES
• Thomas Haden Church, Broken Trail
• Robert Duvall, Broken Trail
• Jeremy Irons, Elizabeth I
• William H. Macy, Nightmares & Dreamscapes
• Matthew Perry, The Ron Clark Story
FEMALE ACTOR IN TELEVISION MOVIE/MINISERIES
• Annette Bening, Mrs. Harris
• Shirley Jones, Hidden Places
• Cloris Leachman, Mrs. Harris
• Helen Mirren, Elizabeth I
• Greta Scacchi, Broken Trail
MALE ACTOR IN DRAMA SERIES
• James Gandolfini, The Sopranos
• Michael C. Hall, Dexter
• Hugh Laurie, House
• James Spader, Boston Legal
• Kiefer Sutherland, 24
FEMALE ACTOR IN DRAMA SERIES
• Patricia Arquette, Medium
• Edie Falco, The Sopranos
• Mariska Hargitay, Law & Order: Special Victims Unit
• Kyra Sedgwick, The Closer
• Chandra Wilson, Grey's Anatomy
MALE ACTOR IN COMEDY SERIES
• Alec Baldwin, 30 Rock
• Steve Carell, The Office
• Jason Lee, My Name Is Earl
• Jeremy Piven, Entourage
• Tony Shalhoub, Monk
FEMALE ACTOR IN COMEDY SERIES
• America Ferrera, Ugly Betty
• Felicity Huffman, Desperate Housewives
• Julia Louis-Dreyfus, The New Adventures of Old Christine
• Megan Mullally, Will & Grace
• Mary-Louise Parker, Weeds
• Jaime Pressly, My Name Is Earl
ENSEMBLE IN DRAMA SERIES
• 24
• Boston Legal
• Deadwood
• Grey's Anatomy
• The Sopranos
ENSEMBLE IN COMEDY SERIES
• Desperate Housewives
• Entourage
• The Office
• Ugly Betty
• Weeds
LIFE ACHIEVEMENT AWARD
• Julie Andrews
