I plan on starting more extensive research in this department soon, as I do every year around this time. With facets only a few blocks away availability shouldn't be an issue. This list is subject to extensive modification, and as you'll see some year's I don't even have one choice suitable. Anyways feel free to critique my very personal choices and offer your own alternatives if you can. In the case of foreign films, I have tried to list films based on what year they had their US premiere, which in many cases does not correspond to international release dates.

Alternate Best Picture Winners (* agreed with Academy)
1927/28 - Sunrise 
1928/29 - Steamboat Bill Jr.
1929/30 - All Quiet on the Western Front*
1930/31 - City Lights
1931/32 - The Grand Hotel*
1932/33 - Duck Soup
1934 - It Happened One Night*
1935 - Top Hat
1936 - San Francisco
1937 - A Star is Born
1938 - The Grand Illusion
1939 - Gone With the Wind *
1940 - The Philadelphia Story
1941 - Citizen Kane
1942 - Yankee Doodle Dandy
1943 - Casablanca *
1944 - Meet Me In St. Louis 
1945 - To Have and Have Not
1946 - A Matter of Life and Death/Stairway to Heaven
1947 - Great Expectations
1948 - Oliver Twist
1949 - The Bicycle Thief
1950 - Sunset Boulevard
1951 - Ace in the Hole/The Big Carnival 
1952 - Singin in the Rain
1953 - Voyage in Italy 
1954 - On the Waterfront *
1955 - East of Eden
1956 - The Searchers
1957 - Paths of Glory
1958 - The Seventh Seal
1959 - Ben-Hur *
1960 - Psycho
1961 - La Dolce Vita
1962 - Lawrence of Arabia *
1963 - 8 1/2 
1964 - Dr. Strangelove: Or How I Learned To Stop Worrying and Love the Bomb
1965 - Doctor Zhivago 
1966 - Whos Afraid of Virginia Woolf?
1967 - The Good, the Bad, and the Ugly
1968 - 2001: A Space Odyssey
1969 - The Wild Bunch
1970 - Au Hasard Balthazar 
1971 - A Clockwork Orange
1972 - The Godfather *
1973 - Mean Streets
1974 - Monty Python and the Holy Grail 
1975 - Nashville
1976 - Taxi Driver 
1977 - Star Wars
1978 - The Deer Hunter *
1979 - Apocalypse Now
1980 - Ordinary People *
1981 - Reds
1982 - Pink Floyds the Wall
1983 - A Christmas Story
1984 - Once Upon a Time in America
1985 - Ran
1986 - Platoon *
1987 - The Princess Bride
1988 - Last Temptation of Christ
1989 - Do the Right Thing 
1990 - Dances With Wolves *
1991 - Landscape in the Mist
1992 - Malcolm X
1993 - Schindlers List *
1994 - Pulp Fiction
1995 - Before Sunrise 
1996 - Fargo
1997 - LA Confidential 
1998 - Saving Private Ryan
1999 - Magnolia
2000 - Requiem for a Dream
2001 - Moulin Rouge 
2002 - The Pianist
2003 - City of God
2004 - The Incredibles 
2005 - Sin City 
2006 - Bobby 

Best Actor
1927/28 - Charlie Chaplin - The Circus
1928/29 - Buster Keaton - Steamboat Bill Jr.
1929/30 - Lew Ayres - All Quiet on the Western Front
1930/31 - Edward G. Robinson - Little Caesar 
1931/32 - Boris Karloff - Frankenstein
1932/33 - Paul Muni - I Am a Fugitive From a Chain Gang
1934 - Clark Gable - It Happened One Night*
1935 - Bela Lugosi - The Raven
1936 - Clark Gable - San Francisco
1937 - Fredric March - A Star is Born
1938 - Cary Grant - Bringing Up Baby
1939 - Jimmy Stewart - Mr. Smith Goes to Washington
1940 - Henry Fonda - The Grapes of Wrath
1941 - Orson Welles - Citizen Kane
1942 - James Cagney - Yankee Doodle Dandy*
1943 - Humphrey Bogart - Casablanca
1944 - Cary Grant - None But the Lonely Heart 
1945 - Robert Walker - The Clock 
1946 - Jimmy Stewart - Its a Wonderful Life
1947 - Charlie Chaplin - Monsieur Verdoux 
1948 - John Wayne - The Three Godfathers
1949 - James Cagney - White Heat
1950 - Spencer Tracy - Father of the Bride
1951 - Montgomery Clift - A Place in the Sun
1952 - Gary Cooper - High Noon*
1953 - 
1954 - Marlon Brando - On the Waterfront*
1955 - James Dean - East of Eden
1956 - Laurence Olivier - Richard III
1957 - Kirk Douglas - Paths of Glory
1958 - Marlon Brando - The Young Lions
1959 - Charlton Heston - Ben-Hur*
1960 - Burt Lancaster - Elmer Gantry*
1961 - Paul Newman - The Hustler
1962 - Jack Lemmon - Days of Wine and Roses
1963 - Richard Harris - This Sporting Life 
1964 - Peter Sellers - Dr. Strangelove
1965 - Rod Steiger - The Pawnbroker 
1966 - Richard Burton - Whos Afraid of Virginia Woolf?
1967 - Paul Newman - Cool Hand Luke
1968 - Leonard Whiting - Romeo and Juliet
1969 - Dustin Hoffman - The Midnight Cowboy
1970 - George C. Scott - Patton*
1971 - Malcolm McDowell - A Clockwork Orange
1972 - Marlon Brando - The Godfather*
1973 - Marlon Brando - Last Tango in Paris
1974 - Jack Nicholson - Chinatown
1975 - Ryan ONeal - Barry Lyndon 
1976 - William Holden - Network
1977 - Woody Allen - Annie Hall
1978 - Jon Voight - Coming Home*
1979 - Roy Scheider - All that Jazz
1980 - Robert De Niro - Raging Bull*
1981 - Warren Beatty - Reds
1982 - Paul Newman - The Verdict 
1983 - Michael Caine - Educating Rita 
1984 - Christopher Guest - This is Spinal Tap 
1985 - William Hurt - Kiss of the Spider Woman*
1986 - James Woods - Salvador 
1987 - Jack Nicholson - Ironweed 
1988 - Willem Dafoe - The Last Temptation of Christ
1989 - Tom Cruise - Born on the Fourth of July
1990 - Kevin Costner - Dances With Wolves
1991 - Anthony Hopkins - Silence of the Lambs*
1992 - Denzel Washington - Malcolm X
1993 - Liam Neeson - Schindlers List
1994 - Ge You - To Live
1995 - Sean Penn - Dead Man Walking 
1996 - Woody Harrelson - The People Vs. Larry Flint 
1997 - Jack Nicholson - As Good As it Gets*
1998 - Johnny Depp - Fear and Loathing in Las Vegas
1999 - Kevin Spacey - American Beauty*
2000 - Tom Hanks - Cast Away 
2001 - Russell Crowe - A Beautiful Mind
2002 - Nicholas Cage - Adaptation 
2003 - Sean Penn - 21 Grams
2004 - Clint Eastwood - Million Dollar Baby 
2005 - Pierce Brosnan - The Matador 
2006 - Leonardo Decaprio - The Departed 

Actress
1927/28 - Janet Gaynor - Sunrise*
1928/29 - Marie Falconetti - The Passion of Joan of Arc 
1929/30 - Louise Brooks - Pandoras Box
1930/31 - Marlene Dietrich - Morocco 
1931/32 - Joan Crawford - The Grand Hotel
1932/33 - Greta Garbo - Queen Christina 
1934 - Marlene Dietrich - The Scarlett Empress 
1935 - Bette Davis - Dangerous*
1936 - Carole Lombard - My Man Godfrey
1937 - Janet Gaynor - A Star is Born
1938 - Katherine Hepburn - Holiday
1939 - Vivien Leigh - Gone With the Wind*
1940 - Joan Fontaine - Rebecca 
1941 - Barbara Stanwyck - The Lady Eve
1942 - Bette Davis - Now, Voyager
1943 - Ingrid Bergman - Casablanca
1944 - Barbara Stanwyck - Double Indemnity 
1945 - Joan Crawford - Mildred Pierce* 
1946 - Celia Johnson - Brief Encounter
1947 - Deborah Karr - Black Narcissus
1948 - Joan Fontaine - Letter From an Unknown Woman
1949 - Olivia de Havilland - The Heiress*
1950 - Gloria Swanson - Sunset Boulevard 
1951 - Shelly Winters - A Place in the Sun
1952 - Maureen O'Hara - The Quiet Man
1953 - Gloria Grahame - The Big Heat
1954 - Judy Garland - A Star is Born
1955 - Anna Magnani - The Rose Tattoo*
1956 - Barbara Rush - Bigger Than Life 
1957 - Giulietta Masina - Nights of Cabiria 
1958 - Shirley MacLaine - Some Came Running
1959 - Katherine Hepburn - Suddenly, Last Summer
1960 - Jean Simmons - Elmer Gantry
1961 - Natalie Wood - Splendor in the Grass
1962 - Jeanne Moreau - Jules and Jim
1963 - Patricia Neal - Hud*
1964 - Tippy Hedron - Marnie 
1965 - Catherine Deneuve - Repulsion
1966 - Elizabeth Taylor - Whos Afraid of Virginia Woolf?*
1967 - Faye Dunaway - Bonnie and Clyde
1968 - Olivia Hussey - Romeo and Juliet 
1969 - Claudia Cardinale - Once Upon a Time in the West
1970 - Liv Ullman - The Passion of Anna 
1971 - Jane Fonda - Klute*
1972 - Liza Minnelli - Cabaret* 
1973 - Julie Christie - Dont Look Now
1974 - Gena Rowlands - A Woman Under the Influence
1975 - Isabelle Adjani - The Story of Adele H.
1976 - Faye Dunaway - Network*
1977 - Dianne Keaton - Annie Hall*
1978 - Jill Clayburgh - An Unmarried Woman 
1979 - Sally Field - Norma Rae*
1980 - Mary Tyler Moore - Ordinary People
1981 - Diane Keaton - Reds
1982 - Meryl Streep - Sophies Choice*
1983 - Shirley MacLaine - Terms of Endearment* 
1984 - Linda Hamilton - The Terminator
1985 - Mia Farrow - The Purple Rose of Cairo
1986 - Sigourney Weaver - Aliens
1987 - Holly Hunter - Broadcast News
1988 - Jodie Foster - The Accused*
1989 - Meg Ryan - When Harry Met Sally
1990 - Gong Li - Ju Dou
1991 - Jodie Foster - Silence of the Lambs*
1992 - Catherine Deneuve - Indochine 
1993 - Holly Hunter - The Piano*
1994 - Gong Li - To Live
1995 - Nicole Kidman - To Die For 
1996 - Frances McDormand - Fargo* 
1997 - Helen Hunt - As Good As It Gets*
1998 - Gwyneth Paltrow - Shakespeare in Love*
1999 - Annette Benning - American Beauty
2000 - Ellen Burstyn - Requiem for a Dream
2001 - Nicole Kidman - Moulin Rouge 
2002 - Renee Zelwegger - Chicago
2003 - Naomi Watts - 21 Grams
2004 - Hilary Swank - Million Dollar Baby*
2005 - Reese Witherspoon - Walk the Line* 
2006 - Penelope Cruz - Volver 

Director 
1927-28 - F. W. Murnau - Sunrise
1928-29 - Buster Keaton - Steamboat Bill Jr.
1929-30 - Lewis Milestone - All Quiet on the Western Front*
1930-31 - Charlie Chaplin - City Lights
1931-32 - James Whale - Frankenstein 
1932-33 - Mervyn LeRoy - I am a Fugitive From a Chain Gang
1934 - Joseph Von Sternberg - The Scarlett Empress
1935 - James Whale - The Bride of Frankenstein
1936 - W. S. Van Dyke - San Francisco 
1937 - William A. Wellman - A Star is Born
1938 - Jean Renoir - The Grand Illusion
1939 - Victor Fleming - Gone With the Wind*
1940 - John Ford - The Grapes of Wrath*
1941 - Orson Welles - Citizen Kane
1942 - Orson Welles and Robert Wise - The Magnificent Ambersons
1943 - Michael Curtiz - Casablanca*
1944 - Vincente Minnelli - Meet Me In St. Louis 
1945 - Howard Hawks - To Have and Have Not
1946 - William Wyler - The Best Years of Our Lives*
1947 - David Lean - Great Expectations
1948 - David Lean - Oliver Twist
1949 - Raoul Walsh - White Heat
1950 - Billy Wilder - Sunset Boulevard
1951 - Max Ophuls - La Ronde 
1952 - Luis Bunuel - Los Olvidados 
1953 - Fritz Lang - The Big Heat 
1954 - Elia Kazan - On the Waterfront*
1955 - Elia Kazan - East of Eden
1956 - John Ford - The Searchers
1957 - David Lean - Bridge on the River Kwai*
1958 - Ingmar Bergman - The Seventh Seal
1959 - William Wyler - Ben-Hur*
1960 - Alfred Hitchcock - Psycho
1961 - Federico Fellini - La Dolce Vita
1962 - David Lean - Lawrence of Arabia*
1963 - Federico Fellini - 8 1/2
1964 - Richard Lester - A Hard Days Night
1965 - Sydney Lumet - The Pawnbroker 
1966 - Mike Nichols - Whos Afraid of Virginia Woolf?
1967 - Mike Nichols - The Graduate*
1968 - Stanley Kubrick - 2001: A Space Odyssey 
1969 - John Schlessinger - The Midnight Cowboy*
1970 - Ken Russell - Women in Love
1971 - Stanley Kubrick - A Clockwork Orange
1972 - Francis Ford Coppala - The Godfather
1973 - Bernardo Bertolucci - Last Tango in Paris
1974 - Roman Polanski - Chinatown
1975 - Robert Altman - Nashville
1976 - Martin Scorsese - Taxi Driver
1977 - George Lucas - Star Wars
1978 - Woody Allen - Interiors
1979 - Bob Fosse - All That Jazz
1980 - Martin Scorsese - Raging Bull
1981 - Warren Beatty - Reds*
1982 - Wolfgang Petersen - Das Boot
1983 - Philip Kaufman - The Right Stuff
1984 - Sergio Leone - Once Upon a Time In America
1985 - Akira Kurosawa - Ran
1986 - Oliver Stone - Platoon*
1987 - Joel Coen - Raising Arizona
1988 - Martin Scorsese - The Last Temptation of Christ
1989 - Spike Lee - Do the Right Thing
1990 - Martin Scorsese - Goodfellas
1991 - Oliver Stone - JFK
1992 - Spike Lee - Malcolm X
1993 - Steven Spielberg - Schindlers List*
1994 - Quentin Tarantino - Pulp Fiction
1995 - Richard Linklater - Before Sunrise 
1996 - Lars Von Trier - Breaking the Waves
1997 - Woody Allen - Deconstructing Harry
1998 - Steven Spielberg - Saving Private Ryan*
1999 - David Fincher - Fight Club
2000 - Steven Sohderberg - Traffic*
2001 - David Lynch - Mulholland Drive
2002 - Pedro Almodovar - Talk to Her
2003 - Quentin Tarantino - Kill Bill, Vol. 1
2004 - Zhang Yimou - Hero 
2005 - Rodriguez, Frank Miller, and Quentin Tarantino - Sin City 
2006 - Hou Hsiao Hsien - Three Times 

all subject to change specifically the 2006 picks