Multiple choice general knowledge Oscar Winner for Best Actor 2001 Russell Crowe - A Beautiful Mind as John Forbes Nash, Jr. Sean Penn - I Am Sam as Sam Dawson Denzel Washington - Training Day as Alonzo Harris Will Smith - Ali as Muhammad Ali Reveal answer Fill a bubble to check yourself C Correct answer Explanation Denzel Washington won the Oscar for Best Actor in 2002 (74th Academy Awards) for his role as Detective Alonzo Harris in Training Day. Russell Crowe won the previous year for A Beautiful Mind.