I enjoy the gameflow from popcornmachine. I like the boxscores with +/- at NBA.com(and there's a cool halftime game pdf they post too). I've learned how to use some of the features of basketball-reference.com, which has a lot of advanced stats and a pretty good method of analyzing player vs. player stats and other somewhat arcane data.
I've stumbled into all of this stuff more or less by accident, but I suspect I'm missing stuff.
Recently, someone said something about "checking the game log" as though there was a place with descriptions of play-by-play game data. And I thought, "Is that available? And if it is, what else am I missing?"
So, the question is, what do you look at after a game, what do you look at if you want to look deeper? What do you look at if you haven't seen a game? What are your personal analysis tools?