As we countdown to the Oscars on Sunday, we look back at a piece of its history.
Click through the gallery above to see every best actor winner since the ceremony began.
And if you missed it, don't forget to check out all the best actress winners also.
- All the best actor Oscar winners through the years
- All the best picture Oscar winners through the years
- Oscar Pistorius Fast Facts
- SAG winners add pinch of clarity to wide-open Oscar race
- Wildlife Photographer of the Year: winners announced
- Your 2018 Oscars viewing guide
- ¡Una camisa digna de Oscar!
- Casey Affleck withdraws from presenting this year's best actress Oscar
- How to watch 30 of this year's Oscar-nominated movies
- Big Bird actor retiring after nearly 50 years