‘The Departed’ Wins Best Picture, Scorsese Best Director,Twenty-six years and seven snubs after his first Oscar nomination, for “Raging Bull,” Martin Scorsese finally felt the warm embrace of the Academy of Motion Picture Arts and Sciences on Sunday as he was named best director and his murderous mob thriller “The Departed” was named the best picture of 2006.

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Monica Almeida/The New York Times,Martin Scorsese won Oscars for best director and best picture for "The Departed." ,After seven snubs, Martin Scorsese finally won an Oscar. But did he win for the right movie?
Helen Mirren was named best actress for "The Queen."“Could you double-check the envelope?” Mr. Scorsese quipped after silencing a raucous standing ovation of whistling, whooping academy members.

“I’m so moved,” he said, accepting the directing prize. “So many people over the years have been wishing this for me. Strangers — I go into doctors’ offices, elevators, I go for an X-ray — they say, ‘You should win one.’ ”

Forest Whitaker won best actor for his performance as the cunning, seductive and savage Idi Amin in “The Last King of Scotland.”

“Receiving this honor tells me that it’s possible,” Mr. Whitaker said. “It is possible, for a kid from East Texas, raised in South Central L.A., and Carson, who believes in dreams, who believes them in his heart, to touch them and have them happen.”

Helen Mirren took best actress for her performance as a traditional monarch in a modern world in “The Queen.”

“For 50 years or more, Elizabeth Windsor has maintained her dignity, her sense of duty and her hairstyle,” Ms. Mirren said. “I salute her courage and her consistency, and I thank her, for if it wasn’t for her, I most certainly would not be here.”

Graham King, the only of three credited producers permitted to accept the best-picture award for “The Departed,” said, “To be standing here where Martin Scorsese won his Oscar is such a joy.” “Pan’s Labyrinth,” Guillermo Del Toro’s magical-realist fantasy set in 1944 Fascist Spain, received Oscars for cinematography, art direction and makeup at the 79th Academy Awards ceremony, but fell short of its ultimate prize, best foreign-language film, which went to “The Lives of Others,” from Germany.

Jennifer Hudson, the “American Idol” reject-turned-star of “Dreamgirls,” was named best supporting actress, giving two of the four acting awards to African-Americans. And Alan Arkin, the cranky, heroin-snorting grandfather in the bittersweet family comedy “Little Miss Sunshine,” won best supporting actor.

“Little Miss Sunshine” also won for its original screenplay by Michael Arndt, a former assistant to Matthew Broderick who had to wait seven years for his script to be produced. “When I was a kid my family drove 500 miles in a van with a broken clutch,” he said, explaining the source of his inspiration. “It ended up being one of the funnest things we did together.”

On a night in which several top awards came as no surprise, “An Inconvenient Truth,” the documentary featuring Al Gore on global warming, won best documentary feature.

“I made this movie for my children,” said the director, Davis Guggenheim, his arm on Mr. Gore’s shoulder. “We were moved to act by this man.”

Mr. Gore took his moment in the worldwide spotlight to underline the film’s message. “My fellow Americans, people all over the world, we need to solve the climate crisis,” he said, adding that the “will to act” was a renewable resource. “Let’s renew it,” he said.

That film also won best original song, for “I Need to Wake Up,” by Melissa Etheridge, upsetting “Dreamgirls,” which had three songs in contention. Holding her Oscar aloft backstage, Ms. Etheridge quipped that it would be “the only naked man who will ever be in my bedroom.”

In a twist, “The Lives of Others,” which examined the Orwellian police state that was East Germany, won in something of an upset. The German director, Florian Henckel von Donnersmarck, thanked Gov. Arnold Schwarzenegger of California “for teaching me that the words ‘I can’t’ should be stricken from my vocabulary.”

The awards for Mr. Del Toro’s movie came on a night in which his and two other films by Mexican directors were up for a total of 16 honors. One of them, “Babel,” won for its original score by Gustavo Santaolalla, who also won last year for “Brokeback Mountain.”

“Happy Feet” was named the year’s best animated feature.

Accepting for best supporting actor, Mr. Arkin said that “Little Miss Sunshine” was about “innocence, growth and connection.” His voice cracking, he praised his fellow actors, saying that acting was a “team sport.” He added, “I can’t work at all unless I feel the spirit of unity around me.”

William Monahan won best adapted screenplay for “The Departed,” his transplantation of the movie “Infernal Affairs” from Hong Kong to South Boston.

An Oscar also went to Thelma Schoonmaker, the longtime editor to Mr. Scorsese. She saluted Mr. Scorsese for being “tumultuous, passionate, funny” as a collaborator. “It’s like being in the best film school in the world,” she said.

“Dreamgirls,” nominated for eight awards, the most of any film, also won for sound mixing. But Mel Gibson’s “Apocalypto,” whose three nominations were caught up in the tempest caused by the director’s drunken, anti-Semitic rant last summer, was shut out.

Ellen DeGeneres made her first appearance as the host of the movie industry’s annual celebration of itself, on a night expected to have its share of pregnant moments. Three filmmaking titans — Steven Spielberg, George Lucas and Francis Ford Coppola — presentedthe award for best director.

Ms. DeGeneres said it had been a lifelong dream of hers to be host for the Oscars, rather than to win one. “Let that be a lesson to you kids out there: Aim lower,” she said, sounding a theme for the evening’s opening, which was designed to honor the many nominees, 177 in all, rather than focusing on the winners.

Ms. DeGeneres repeatedly ventured into the audience, at one point getting Mr. Spielberg to take a picture of her with Clint Eastwood, “for MySpace.”

And in a choice full of irony for industry insiders, Tom Cruise, who was thrown off the Paramount lot last summer by Viacom’s chairman, Sumner M. Redstone, gave the Jean Hersholt Humanitarian Award to Sherry Lansing, the former Paramount chairwoman who retired during a shake-up by Mr. Redstone two years earlier.

Backstage, Ms. Lansing said she had not known that Mr. Cruise was going to give her the award. “I saw him at an Oscar party a few days before, and he was sort of cold to me,” she said. Onstage, she said, he had whispered in her ear: “This is an honor. I really wanted to do this, you know how much I love you.” Ms. Lansing said she believed Mr. Cruise, who had a rough year before taking over management of United Artists, would be back to pick up an Oscar for directing or producing within five years.

Ennio Morricone, the Italian composer, received an honorary Oscar from Mr. Eastwood, who starred in the spaghetti westerns for which Mr. Morricone provided the unmistakable music.

The program began with a bouncy montage, directed by Errol Morris, of interview snippets with nominees reciting, among other things, the number of times they had come close to winning an Oscar. “Zilch,” said Peter O’Toole, of the number of times he had won.

Will Ferrell and Jack Black, leading members of Hollywood’s comedy rat pack, did a song-and-dance number bemoaning the paucity of comedic talent among the Oscar nominees. “I guess you don’t like laughter,” Mr. Ferrell sang. “A comedian at the Oscars is the saddest, bitterest, alcoholic clown.”