I still love Tyson but after watching Ali's documentaries, he is the real king.
The vid clip above is pretty cool though!
I've watched documentaries on both.. and (except for the tail end of his career) for me Tyson's story is much more impressive.
You've got an overweight kid from Brooklyn, who constantly got picked on, was arrested 30+ times by the age of 13, never knew his real father, mother dies when he's 16.
Then at 18 becomes a professional boxer, starts knocking the shit out of older, bigger and more experienced fighters. His combination of speed and power propels him to become the youngest heavyweight champion of the world at age 20.
You couldn't script a better story than that, if you tried...
Then of course, there's his fall from grace...