I am not a typical hero worshiper but here are a few people who would qualify - personal heroes because of their impact on me and/or the world I experience.

Bill Hicks
Bob Marley
Che Guevara
David Icke
Bob (Zimmerman) Dylan
George Carlin
Mahatma Gandhi
John Fitzgerald Kennedy
Jim Marrs
Meria Heller
Nelson Mandela
Patricia J Baldner
Jeff Rense
Niels Bohr
Albert Einstein
David Bohm
Werner Karl Heisenberg
Jill Bolte Taylor
Amit Goswami
Mary Myers
John Lennon
Rupert Sheldrake
Thomas Campbell
Dovey Roundtree Johnson
Allen Watt
Martin Luther King, Jr
Cesar Chavez
Howard Zinn
Medgar Evers