My memories of Havlichek unfortunately begins in the 70's, at the latter part of his career...I wasn't paying attention in the "black and white TV" days.
He's one of the reasons why I'm a Celtics fan today. I started following the team a little, and John looked a lot like an older version of one of my best friends at the time, a youth basketball player with similar skills.
The more I watched...the more I absorbed the Celtic history. There was this guy a few years before Hondo named Russell who was pretty good I was told.

The older we get, the more holes in our universe are created when our "heroes" stop playing, get older, and, sadly, pass on. We know the world goes on, as it will when we leave, but somehow the world just doesn't seem the same without them in it.
Respect and condolences to all his friends and family.