Stream now with KPBS Passport / Watch Thursdays, Aug. 14 - Sept. 4 at 8 p.m. on KPBS 2. Muhammad Ali brings to life one of the most indelible figures of the 20th century, a three-time heavyweight boxing champion who captivated millions of fans across the world with his mesmerizing combination of speed, grace, and power in the ring, and charm and playful boasting outside of it.