So, I only casually watched the NBA as a kid (naturally, I loved Michael Jordan and the Bulls), but I actively, seriously followed it for five or six years: from the 2002-2003 season to the end of the 2007-2008 season, when my all-time favorite player, Kevin Garnett, finally won his NBA Championship with the Celtics. (After that, I just started peeking in on it every once in a blue moon.)
I was never really a Lakers fan during those five or six years, nor was I much of a Kobe fan, but man, I always respected his talent. As others have said, whether you have ever paid any attention to the NBA or not, you've probably heard of him. He was unquestionably one of the greatest to ever play the game of basketball. I'm still in complete shock over what has happened today and probably will be for a while.