Samuel L. Jackson
Jackson has played a Jedi boss, an Avengers boss, and the boss of some high-flying snakes. In short: dude's a veteran boss. But despite being constantly cast as badasses, Jackson is actually a sweet, reflective person in real life. Not only does he constantly express gratitude to his fans, but he is also deeply philanthropic, and has helped raise awareness about Alzheimer's disease, testicular cancer, and education. In The Avengers, Nick Fury says he still believes in heroes. How cool that he's actually played by one!