Only people to have been awarded both an Oscar and a Nobel Prize.
G. B. Shaw
(note that Al Gore did not receive the award for An Inconvenient Truth)
The oldest actor ever to win an Academy Award.
Christopher Plummer for Beginners
The first (and only) G-rated film to win the Best Picture Oscar.
Most nominations without a Best Picture nomination.
They Shoot Horses, Don't They? (1969) with 9 nominations
The only person to win more than three acting Oscars.
Katherine Hepburn. She won four Best Leading Actress awards for: Morning Glory (1932/33), Guess Who's Coming To Dinner (1967), The Lion in Winter (1968), and On Golden Pond (1981). The following people have each won exactly three acting Oscars: Ingrid Bergman, Walter Brennan, and Jack Nicholson
Only people to have won the Acting Award posthumously.
Peter Finch for Network (1976) and Heath Ledger for The Dark Knight (2008)
Holds the record for receiving as well as being nominated for the most Academy Awards.
Walt Disney. He won 22 competitive awards and received four honorary awards. He was also nominated for 59 Academy Awards during his lifetime
Oldest recipient of any Oscar.
Groucho Mark (Honorary Award in 1973 when he was 83 years old)
Most Oscar nominations for acting.
Meryl Streep (14)
Most Oscar nominations for acting for an Actor.
Jack Nicholson (12)
Only films to have won Best Picture, Best Director, Best Actor, Best Actress, and Best Screenplay, a feat which is known as winning the 'Big Five' or the Oscar 'Grand Slam.'
It Happened One Night (1934), One Flew Over the Cuckoo's Nest (1975), and The Silence of the Lambs (1991)
Only people to have refused to accept an Academy Award.
George C Scott (1970 in Patton) and Marlon Brando (1972 in The Godfather)
The youngest person ever to win an acting Oscar.
Tatum O'Neal (age 10) for Paper Moon (1973)
Film featuring Oscar-winning performances in the four competitive acting categories (Actor, Actress, Supporting Actor, and Supporting Actress).
None. The two films which came closest to achieving this feat were A Streetcar Named Desire (1951) and Network (1976), with each film earning three out of the four acting Oscars
Most acting nominations without a win (8).
Only people to have been nominated as producer, as director, as writer and as actor all in the same film.
Warren Beatty (For Heaven Can Wait in 1978 and Reds in 1981) and Orson Welles (Citizen Kane in 1941)
Most nominated films.
All About Eve (1950) and Titanic (1997), both with 14 nominations. All About Eve won 6 awards, and Titanic won 11 awards
Most wins for a film (11).
Ben-Hur (1959), Titanic (1997), and The Return of the King (2003)
Only film to have won in every category of nomination.
The Return of the King (2003)
Most Best Director awards.
John Ford (4): from 1935 (for The Informer), 1940 (The Grapes Of Wrath), 1941 (How Green Was My Valley) and 1952 (for The Quiet Man)
Only actors ever to achieve the Best Actor award two years in succession.
Spencer Tracy (in 1937 and 1938, for Captains Courageous and Boys Town) and Tom Hanks in (1993 and 1994 for Philadelphia and Forrest Gump)
The shortest performance ever to win an acting Oscar.
Beatrice Straight's performance, which lasted 5 minutes and 40 seconds, in Network (1976)
Most nominated films with no wins.
The Turning Point (1977) and The Color Purple (1985) - 11 nominations each
Distinction of having the most Oscar awards of any film without winning Best Picture.
The youngest person ever to be awarded an Oscar.
Shirley Temple Black (age 6), who was awarded the inaugural (now retired) non-competitive Academy Juvenile Award in 1934
Only women nominated in the Best Director category.
Lina Wertmueller for Seven Beauties in 1976, Jane Campion for The Piano in 1994 and Sofia Coppola for Lost in Translation in 2004 and of course Kathyrn Bigelow who won for The Hurt Locker (2009)
The oldest woman to win an acting Oscar.
Jessica Tandy (age 80) for Driving Miss Daisy (1989)