"It's not an exaggeration to say that when Marlon Brando came along in the mid 1940s, he forever changed the nature of acting. A consummate professional in terms of his theatrical performances, Brando ushered in a new era for American film, one that emphasized naturalistic performances that blurred the line between scripted segments and improvised acting. One of the most celebrated actors to ever grace the silver screen, Brando's performances ranged from stereotypical teen heartthrobs to grizzled crime bosses with near-unintelligible accents. A trailblazer in terms of his method acting, Brando disappeared into each and every one of the roles he signed on to play, outfitting his characters with their own distinct quirks, habits, tics, and subtle idiosyncrasies. From infamous Mafia leaders to jungle-dwelling U.S. Army colonels, here are some of Marlon Brando's greatest cinematic performances, ranked from best to worst." - wealthofgeeks.com