General/News
Celtics.com - Official Site
Boston Globe - Peter May, Shira Springer, etc.
Boston Herald - Steve Bulpett, Mark Murphy, etc.
Boston Sports Media Watch - All the daily links you'll ever need.
Couch GM Tools
Trade Checker - If it don't work here, don't bother.
Hoopshype Salaries - Yes, he makes THAT much.
Larry Coon's Salary FAQ - For all the lawyers in the house.
NBADraft.net - The next Al Jefferson is out there somewhere.
Stats
Celtics Stats - Just what it says.
82games.com - A different look.
PER Stats - Money Ball, for basketball.
TommyPoints.com - Give me a Tommy Point!
Basketball Reference - An encyclopedia for Celtics.