1) Jack Nicholson- Number one on the list is Jack Nicholson for being one of the greatest actors of all-time through the past five decades. He has been turning in great performances after another by earning 12 Academy Awards including three Oscar wins. He owns the record for most Oscar nominations by a male performer and is one of two actors to receive an Acadamy Award nomination in every decade from 1960's to 2000's. He is one of the most charismatic actors and has worked in every film genre such as biopics, gangstar films, romance, war, sci-fi, adventure, horror, western, comedies, dramas, thrillers, action, and musicals.
2) Daniel Day Lewis-At 55 years old, he has made only 19 movies but each performance has been an exercise in total immersion. He was so convincing as the cerebral palsy-afflicted Christy Brown in 1989's "My Left Foot" that the audience probably thought that he was not disabled after he accepted the Academy Award for the film. The fact that Day Lewis gives a great performance as Abraham Lincoln in "Lincoln" 2012 even though he is part Irish and English descent is proof of great acting.
3) Robert De Niro- known for his method acting techniques of researching his characters backgrounds. Many of De Niro's films are could be considered amongst the greatest films of all time such as The Godfather: Part II, Taxi Driver, Raging Bull, and Goodfellas. De Niro has been nominated for seven academy awards including two Oscar wins.
4) Al Pacino- One of the all-time movie legends who received his first Oscar nomination for The Godfather for Best Supporting Actor. He then went on to receive a nomination in the next three years after for Serpico, The Godfather Part II, and Dog Day Afternoon. He has been nominated eight times and won an Oscar for playing a blind man in Scent of a Women. He is known for his forceful dramatic presentation.
5) Tom Hanks- He started off with screwball comedies but than from 1993 to 1998 he cemented himself as one of the greatest actors of all-time. During that span he starred in Philadelphia, Forest Gump, Saving Private Ryan, and Toy Story. He has been nominated for five Academy Awards including back to back wins in 1994 and 1995 for best actor in a leading role for Philadelphia and Forest Gump. He often plays ordinary people in extroadinary situations and likable characters.