It's as predictable as the change of seasons.
When one era's Ray Robinson fades, another era's Cassius Clay emerges. And when one era's Muhammad Ali reaches the end, another era's Ray Leonard is there to keep the tradition alive.
Regardless of the state of the gloved, ringed sport, you can almost always count on a few fighters to not only push the envelope with their fist skills but also walk the line of propriety with their words, outfits or their fighting styles.
We assembled a list of 10 boxers who've done just that in the last 10 years. Click through to see our picks and feel free to drop a few comments/suggestions of your own as well.