| Jon Stewart | ... | Himself - Host |
| rest of cast listed alphabetically: |
| Amy Adams | ... | Herself - Nominee: Best Actress in a Supporting Role |
| Moustapha Akkad | ... | Himself, in memorial sequence (archive footage) |
| Jessica Alba | ... | Herself - Co-Presenter: Best Sound Mixing |
| Eddie Albert | ... | (archive footage) |
| Muhammad Ali | ... | Himself (archive footage) |
| Robert Altman | ... | Himself - Honorary Award Recipient |
| Jennifer Aniston | ... | Herself - Presenter: Best Costume Design |
| Colleen Atwood | ... | Herself - Winner: Best Costume Design |
| Lauren Bacall | ... | Herself - Presenter |
| Eric Bana | ... | Himself - Presenter: Best Sound Mixing |
| Anne Bancroft | ... | (archive footage) |
 | Paul Beauregard | ... | Himself - Winner: Best Original Song |
| Dion Beebe | ... | Himself - Winner: Best Cinematography |
| Barbara Bel Geddes | ... | (archive footage) |
| Howard Berger | ... | Himself - Winner: Best Makeup |
| Nicole Berger | ... | Dancer |
| John Box | ... | Himself, in memorial sequence (archive footage) |
| Steve Box | ... | Himself - Winner: Best Animated Feature |
| Christopher Boyes | ... | Himself - Winner: Best Sound Mixing |
| Zach Braff | ... | Chicken Little - Presenter: Best Animated Short Film (voice) |
| Sandra Bullock | ... | Herself - Presenter: Best Art Direction |
| Tim Burton | ... | Himself - Nominee: Best Animated Feature Film |
| Jordi Caballero | ... | Dancer |
| John Canemaker | ... | Himself - Winner: Best Short Film - Animated |
| Kate Capshaw | ... | Herself - Audience Member |
| Steve Carell | ... | Himself- Presenter: Best Makeup |
| George Clooney | ... | Himself - Winner: Best Actor in a Supporting Role / Nominee: Best Director and Best Original Screenplay / Presenter: In Memoriam |
| Cedric Coleman | ... | Himself - Winner: Best Original Song |
| Russell Crowe | ... | Himself - Presenter: Biographical Film Montage |
| Joan Cusack | ... | Abby Mallard - Co-presenter: Best Animated Short Film (voice) |
| Yves Darondeau | ... | Himself - Winner: Best Documentary Feature |
| Sandra Dee | ... | Memorial sequence (archive footage) |
| Judi Dench | ... | Herself - Nominee: Best Actress in a Leading Role |
| Matt Dillon | ... | Himself - Nominee: Best Actor in a Supporting Role |
| Will Ferrell | ... | Himself - Co-Presenter: Best Makeup |
| John Fiedler | ... | Memorial sequence (archive footage) |
| Jamie Foxx | ... | Himself - Presenter: Best Actress in a Leading Role |
| Anthony Franciosa | ... | Memorial sequence (archive footage) |
| Morgan Freeman | ... | Himself - Presenter: Best Supporting Actor |
| Mohandas K. Gandhi | ... | Himself (archive footage) (as Mahatma Gandhi) |
| Sidney Ganis | ... | Himself - Academy President (as Sid Ganis) |
| Jennifer Garner | ... | Presenter - Best Sound Editing |
| Lou Gehrig | ... | Himself (archive footage) |
| Paul Giamatti | ... | Himself - Nominee: Best Actor in a Supporting Role |
| Guy Green | ... | Himself - memorial sequence (archive footage) |
| Jake Gyllenhaal | ... | Himself - Nominee / Presenter |
| Paul Haggis | ... | Himself - Winner: Best Picture / Screenplay |
| Tom Hanks | ... | Himself |
| Salma Hayek | ... | Herself - Presenter: Best Original Score |
| Kasie Head | ... | Trophy Presenter |
| Michael Hedges | ... | Himself - Winner: Best Sound Mixing |
| Debra Hill | ... | Herself, in memorial sequence (archive footage) |
| Joel Hirschhorn | ... | Himself, in memorial sequence (archive footage) |
| Dustin Hoffman | ... | Himself - Presenter: Best Adapted Screenplay |
| Philip Seymour Hoffman | ... | Himself - Winner: Best Actor in a Leading Role |
| Gavin Hood | ... | Himself - Winner: Best Foreign Film |
| Mike Hopkins | ... | Himself - Winner: Best Sound Editing |
| Jordan Houston | ... | Himself - Winner: Best Original Song |
| Terrence Howard | ... | Himself - Presenter: Best Documentary Short & Nominee: Best Actor in a Leading Role |
| Felicity Huffman | ... | Herself - Nominee: Best Actress in a Leading Role |
| William Hurt | ... | Himself - Nominee: Best Actor in a Supporting Role |
| Alberto Iglesias | ... | Himself - Nominee: Best Original Score |
| Samuel L. Jackson | ... | Himself - Presenter |
| Luc Jacquet | ... | Himself - Winner: Best Documentary Feature |
| Tom Kane | ... | Announcer |
| Catherine Keener | ... | Herself - Nominee: Best Actress in a Supporting Role |
| Kathleen Kennedy | ... | Herself - Nominee: Best Picture |
| Nicole Kidman | ... | Herself - Presenter: Best Supporting Actor |
| Keira Knightley | ... | Herself - Nominee: Best Actress in a Leading Role |
| Robert Knudson | ... | Himself, in memorial sequence (archive footage) |
| Tami Lane | ... | Herself - Winner: Best Makeup |
| Queen Latifah | ... | Herself - Presenter: Best Original Song |
| Heath Ledger | ... | Himself - Nominee: Best Actor in a Leading Role |
| Ang Lee | ... | Himself - Winner: Best Director |
| Ernest Lehman | ... | Himself, in memorial sequence (archive footage) |
| Joe Letteri | ... | Himself - Winner: Best Visual Effects |
| Stu Linder | ... | Himself, in memorial sequence (archive footage) |
| Jennifer Lopez | ... | Herself - Presenter: Best Sound Editing |
| Ludacris | ... | Himself - Presenter: Song Performance 'It's Hard Out Here for a Pimp' (as Chris 'Ludacris' Bridges) |
| William H. Macy | ... | Himself |
| Corinne Marrinan | ... | Himself - Winner: Best Short Film - Documentary |
| Rachel McAdams | ... | Herself - Presenter: Scientific & Technical Achievement Awards |
| James McAvoy | ... | Himself / Mr. Tumnus, the Faun (archive footage) |
| Martin McDonagh | ... | Himself - Winner: Best Short Film, Live Action |
| Frances McDormand | ... | Herself - Nominee: Best Actress in a Supporting Role |
| Larry McMurtry | ... | Himself - Winner: Best Adapted Screenplay |
| Ismail Merchant | ... | Himself, in memorial sequence (archive footage) |
| Bennett Miller | ... | Himself - Nominee: Best Director |
| John Mills | ... | (archive footage) |
| Terry Moore | ... | Herself - Audience Member |
| Robert Moresco | ... | Himself - Winner: Best Original Screenplay (as Bobby Moresco) |
| Pat Morita | ... | (archive footage) (as Noriyuki 'Pat' Morita) |
| John Myhre | ... | Himself - Winner: Best Art Direction |
| John Nash | ... | Himself (archive footage) (as John Forbes Nash) |
| Robert F. Newmyer | ... | Himself, in memorial sequence (archive footage) |
| Fayard Nicholas | ... | (archive footage) |
| Jack Nicholson | ... | Himself - Presenter: Best Picture |
| Dan O'Herlihy | ... | (archive footage) |
| Diana Ossana | ... | Herself - Winner: Best Adapted Screenplay & Nominee: Best Picture |
| Nick Park | ... | Himself - Winner: Best Animated Feature |
| Dolly Parton | ... | Herself - Nominee: Best Original Song / Performer |
| George S. Patton | ... | Himself (archive footage) |
| Hammond Peek | ... | Himself - Winner: Best Sound Mixing |
| Chris Penn | ... | (archive footage) |
| Itzhak Perlman | ... | Himself - Performer |
| Brock Peters | ... | (archive footage) |
| Marisa Petroro | ... | Trophy Presenter |
| Joaquin Phoenix | ... | Himself - Nominee: Best Actor in a Leading Role |
| Rodrigo Prieto | ... | Himself - Nominee: Best Cinematography |
| Richard Pryor | ... | (archive footage) |
| Susan Raab Simonson | ... | Herself - Guest |
| Joe Ranft | ... | Himself, in memorial sequence (archive footage) |
| Gretchen Rau | ... | Herself - Winner: Best Art Direction |
| Keanu Reeves | ... | Himself - Co-Presenter: Best Art Direction |
| Christian Rivers | ... | Himself - Winner: Best Visual Effects |
| Mickey Rooney | ... | Himself - Audience Member |
| Jane Russell | ... | Herself - Audience Member |
| Gustavo Santaolalla | ... | Himself - Winner: Best Original Score |
| Vincent Schiavelli | ... | Memorial sequence (archive footage) |
| Robert J. Schiffer | ... | Himself, in memorial sequence (archive footage) |
| Cathy Schulman | ... | Herself - Winner: Best Picture |
| Michael Semanick | ... | Himself - Winner: Best Sound Mixing |
| Moira Shearer | ... | Memorial sequence (archive footage) |
| Dean Silvers | ... | Himself |
| Forrest Silvers | ... | Himself |
| Simone Simon | ... | Memorial sequence (archive footage) |
| Eric Simonson | ... | Himself - Winner: Best Short Film - Documentary |
| Will Smith | ... | Himself - Presenter: Best Foreign Film |
| Steven Spielberg | ... | Himself - Nominee: Best Picture & Best Director |
| Kevin Alexander Stea | ... | Dancer - It's Hard Out Here For A Pimp |
| Peggy Stern | ... | Herself - Winner: Best Short Film - Animated |
| Ben Stiller | ... | Himself - Presenter: Best Visual Effects |
| David Strathairn | ... | Himself - Nominee: Best Actor in a Leading Role |
| Meryl Streep | ... | Herself - Co-presenter: Honorary Award to Robert Altman |
| Hilary Swank | ... | Herself - Presenter: Best Actor |
| Richard Taylor | ... | Himself - Winner: Best Visual Effects |
| Charlize Theron | ... | Herself - Nominee: Best Actress in a Leading Role & Presenter: Best Documentary Feature |
| Three 6 Mafia | ... | Themselves - Performers ("It's Hard Out Here for a Pimp") |
| Uma Thurman | ... | Herself - Presenter |
| Lily Tomlin | ... | Herself - Co-presenter: Honorary Award to Robert Altman |
| John Travolta | ... | Himself - Presenter: Best Cinematography |
| Casey Tutton | ... | Steve Martin's Daughter in Jon Stewart's Opening Film |
| Ryan Tutton | ... | Steve Martin's Son in Jon Stewart's Opening Film |
| Ethan Van der Ryn | ... | Himself - Winner: Best Sound Editing |
| Brian Van't Hul | ... | Himself - Winner: Best Visual Effects |
| Nacho Vigalondo | ... | Himself - Audience Member |
| Naomi Watts | ... | Herself - Presenter |
| Rachel Weisz | ... | Herself - Winner: Best Actress in a Supporting Role |
| Onna White | ... | Herself, in memorial sequence (archive footage) |
| John Williams | ... | Himself - Nominee: Best Original Score |
| Michelle Williams | ... | Herself - Nominee: Best Actress in a Supporting Role |
| Luke Wilson | ... | Himself - Co-Presenter: Best Live Action Short |
| Owen Wilson | ... | Himself - Co-Presenter: Best Live Action Short |
| Rita Wilson | ... | Herself - Audience Member |
| Hughes Winborne | ... | Himself - Winner: Best Editing |
| Shelley Winters | ... | (archive footage) |
| Robert Wise | ... | Himself, in memorial sequence (archive footage) |
| Reese Witherspoon | ... | Herself - Winner: Best Actress in a Leading Role & presenter: Best Animated Feature |
| Edward D. Wood Jr. | ... | Himself (archive footage) (as Ed Wood) |
| Teresa Wright | ... | Memorial sequence (archive footage) |
| Kathleen York | ... | Herself - Nominee: Best Original Song & Performer (as Kathleen 'Bird' York) |
| Hawk Younkins | ... | Himself |
| Danielle Yu | ... | Trophy Presenter |
| Ziyi Zhang | ... | Herself - Presenter: Best Film Editing |
| Javier Bardem | ... | Ramón Sampedro (archive footage) (uncredited) |
| Halle Berry | ... | Herself, in opening segment (uncredited) |
| Stephen Colbert | ... | Narrator of Attack Ads (voice) (uncredited) |
| Billy Crystal | ... | Himself, in opening segment [pre-recorded] (uncredited) |
| Mel Gibson | ... | Himself, in opening segment [pre-recorded] (uncredited) |
| Whoopi Goldberg | ... | Herself, in opening segment (uncredited) |
| Russ Leatherman | ... | Mr. Moviefone (uncredited) |
| David Letterman | ... | Himself, in opening segment [pre-recorded] (uncredited) |
| Steve Martin | ... | Himself, in opening segment (uncredited) |
| Tim Byron Owen | ... | Saxaphonist (uncredited) |
| Chris Rock | ... | Himself, in opening segment [pre-recorded] (uncredited) |
| Big Spence | ... | Himself (uncredited) |
company.
All I have to say after watching the 78th Academy Awards is: Good for you Oscar! After all of the overwhelming media attention received by certain movies, let's say Brokeback Mountain for example, the Academy proved itself better and didn't follow what everyone said was inevitable. After many years of having to admit some disappointment with the Oscar's I had decided that if it turned out the way everyone said it would I would have to give up on Hollywood. This was their final chance, and all signs pointed to them giving in to the pressure and handing out all the awards to Brokeback and TransAmerica.
But they were better!!! They went against what all the critics and all the press said and Brokeback was denied almost every award it was nominated for. Apart from giving just a great show, the Academy has proved that maybe, just maybe they have some goodness left in them. Was it the correct choice? It doesn't really matter, cuz it was the right thing to do. And that's something Hollywood has rarely been brave enough to attempt.
So way to go Academy! You've restored my faith in you at least a little longer, and you've shown that there may yet be some hope for Hollywood- maybe not much, but there is some still left.
Jay Addison