Since Y2K the Patriots have won 4 Super Bowls, the Red Sox have won 3 World Series, the Celtics won the NBA Championship, and the Bruins won the Stanley Cup. In addition since 2000 Boston College won 4 NCAA Hockey Championships and Boston University added another. If you wanted to include New England as a region - you could also add in Providence College's win in 2015 and Yale's win in 2013 (coached by Worcester's Keith Allain no less).
We have been witness all-time greats such at Tom Brady, Bill Belichick, David Ortiz, Kevin Garnett and Zedano Chara (you can argue Chara if you like but I have a soft spot for the big guy).
I don't bring this up to brag. Just to remind myself and other Boston sports fans just how blessed we have been.