It was explained to me that saying "the winner is..." indirectly labels the other nominees as losers, a very negative image. Saying "the Oscars goes to..." doesn't leave the other nominees in such a negative light.
Bela Lugosi in Son of Frankenstein
Lon Chaney Jr in Of Mice and Men
Boris Karloff in The Body Snatcher
Donald Sutherland in Ordinary People and Six Degrees of Separation
Alan Rickman in Die Hard
Bette Davis and Lillian Gish in The Whales of August
and the biggest oversight in the history of the...