Yes he was.
Warner Baxter.
Warner Baxter won the Oscar for Best Actor in a Leading Role in 1928.
It seems to have become traditional to present the Oscar for Best Supporting Actor first every night at the Academy Award (Oscar) ceremony.
Melvyn Douglas won the Oscar for Best Actor in a Supporting Role for Being There. He was not present at the awards ceremony. Co-presenter Liza Minnelli accepted the award on his behalf.
They have not had the Oscar Ceremony yet for UP. That would be in 2010.
It was held in 1929.
"The Curious Case of Benjamin Button" (Paramount and Warner Bros.), Kirk Baxter and Angus Wall "The Dark Knight" (Warner Bros.), Lee Smith "Frost/Nixon" (Universal), Mike Hill and Dan Hanley "Milk" (Focus Features), Elliot Graham "Slumdog Millionaire" (Fox Searchlight), Chris Dickens
2 Academy Awards events were held in 1930: 2nd Annual Academy Awards (April, 1930) = Warner Baxter - In Old Arizona 3rd Annual Academy Awards (November, 1930) = George Arliss - Disraeli
Oscar's Birthday Present - 1971 was released on: USA: January 1971
No, they're too many.
Paul Newman has been nominated for several Oscars, but he has only won one. He won the Oscar for Best Actor in a Leading Role for: The Color of Money (1986) Paul Newman was not present at the awards ceremony. Robert Wise accepted the award on his behalf.
If Heath Ledger is to win an Oscar for supporting actor the Oscar will most likely be given to Warner Brothers Studio, who made "The Dark Knight", or to his family.