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It was expected that Martin Scorsese would win the Oscar for Best Director for his movie 'Goodfellas.' But in fact Kevin Costner won it for 'Dances with Wolves.'
In the running for Best Actor in 2003 were big Hollywood names Tom Hanks and Daniel Day-Lewis.
However, it was the lesser known Adrien Brody who won the Oscar in the end, for his role in 'The Pianist.'
'La La Land' had stunned critics and was tipped to win the Oscar for Best Picture. But after a mistaken announcement that 'La La Land' was the winner, the true winner of the night was revealed: 'Moonlight.' The surprise was universal.
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Many expected Francis Ford Coppola to win the Oscar for Best Director for 'The Godfather.' But it was Bob Fosse who won the award for 'Cabaret.'
Either 'All the President's Men', which starred Robert Redford, or 'Network' were tipped to win the Oscar for Best Picture in 1977. But fans were surprised when 'Rocky,' starring Sylvester Stallone, was announced as the winner.
'Saving Private Ryan', directed Steven Spielberg, was the sure choice to win the Oscar for Best Picture. But in the end it was 'Shakespeare in Love' which took home the award.
'Citizen Kane' was the favorite to win the Oscar for Best Picture. But instead the award went to 'How Green Was My Valley.'
'Pulp Fiction' and 'The Shawshank Redemption' were tipped to win the Oscar for Best Picture. But the award went to 'Forrest Gump' instead.
'Brokeback Mountain', starring Heath Ledger and Jake Gyllenhaal was the favorite for the Oscar for Best Picture in 2006. But the prize ultimately went to 'Crash,' directed by Paul Haggis.
Judy Garland had an incredible career and was expected to win the Oscar for Best Actress for her role in 'A Star Is Born.' However, Grace Kelly surprised everyone with her win for her part in 'The Country Girl.'
Lauren Bacall was the favorite to win the Oscar for Best Supporting Actress, for her role in 'The Mirror Has Two Faces.' But it was French actress Juliette Binoche who took the award home, for her acting in 'The English Patient.'
'High Noon', directed by Fred Zinnemann, was tipped to win for Best Picture. But it was the aptly named 'The Greatest Show on Earth', starring Charlton Heston and Betty Hutton, which won the Oscar.
The prestigious Oscars are always one of the most awaited events on the entertainment calendar. With so many movies to chose from, over the years some surprising winners have emerged, which went completely against what was expected!
Click on the gallery to see the biggest Oscar shockers which have occurred over the history of the awards ceremony.
The biggest shock winners in Oscar history
There have been several famous moments when awards went to the most unexpected nominees
CELEBRITY Oscars
The prestigious Oscars are always one of the most awaited events on the entertainment calendar. With so many movies to chose from, over the years some surprising winners have emerged, which went completely against what was expected! Click on the gallery to see the biggest Oscar shockers which have occurred over the history of the awards ceremony.