I was 6 the last time the C's won the championship. I had no appreciation for it whatsoever. I knew who Larry Bird was.
The first year I truly followed the team was either the 87-88 or 88-89 season. My memory's a little foggy but I recall Kevin Gamble just being some scrub at the end of the bench until the end of the year when he got some playing time and had a couple of 30-40 point games. I remember the Pistons knocking us out and Dennis Rodman and Brad Lohaus fighting at the end of the game; then Rodman running around with no shirt on.
There wasn't really a moment that I can remember becoming a C's fan. It was gradual. My disliking Rodman can be traced back to that game though.