Actor Sean Penn, who won the Best Supporting Actor for 'One Battle After Another', marked his third Oscar win. With this, Sean Penn has tied with Jack Nicholson, Walter Brennan, and Daniel Day-Lewis for the record for most-awarded male actor in Oscars' 98-year history. Sean has won two Best Actor Oscars for 'Mystic River' in 2004 and 'Milk' in 2009.