Emil Jannings won the first Academy Award for Best Actor in 1929 for his performances in \"The Way of All Flesh\" and \"The Last Command.\"

Daniel Day-Lewis has won three Academy Awards for Best Actor, for his performances in \"My Left Foot\" (1989), \"There Will Be Blood\" (2007), and \"Lincoln\" (2012).

Adrien Brody was 29 years old when he won the Academy Award for Best Actor for his performance in \"The Pianist\" (2002), making him the youngest actor to win the award.

Marlon Brando won the Academy Award for Best Actor for playing Vito Corleone in \"The Godfather\" (1972) and \"The Godfather Part II\" (1974).

Sidney Poitier was the first African-American actor to win an Academy Award for Best Actor, for his performance in \"Lilies of the Field\" (1963).

Daniel Day-Lewis has won the Academy Award for Best Actor for playing real-life people three times, for his performances in \"My Left Foot\" (1989), \"There Will Be Blood\" (2007), and \"Lincoln\" (2012).

Roberto Benigni was the first actor to win an Academy Award for Best Actor for a foreign-language performance, for his role in the Italian film \"Life Is Beautiful\" (1997).

Daniel Day-Lewis has won the Academy Award for Best Actor for playing a U.S. President twice, for his performances in \"Lincoln\" (2012) and \"Gangs of New York\" (2002).

Gene Kelly was the first actor to win an Academy Award for Best Actor for a musical performance, for his role in \"Singin' in the Rain\" (1952).

Robert De Niro has won the Academy Award for Best Actor for playing a boxer twice, for his performances in \"Raging Bull\" (1980) and \"The Irishman\" (2019).

Harrison Ford was the first actor to win an Academy Award for Best Actor for a science fiction performance, for his role in \"Star Wars: Episode IV - A New Hope\" (1977).

Hugh Jackman has won the Academy Award for Best Actor for playing a superhero twice, for his performances in \"Les Misérables\" (2012) and \"Logan\" (2017).

Robin Williams was the first actor to win an Academy Award for Best Actor for an animated performance, for his voice role as the Genie in \"Aladdin\" (1992).

Anthony Hopkins has won the Academy Award for Best Actor for playing a villain twice, for his performances in \"The Silence of the Lambs\" (1991) and \"Nixon\" (1995).

Peter Finch was the first actor to win an Academy Award for Best Actor for a posthumous performance, for his role in \"Network\" (1976).