Matt Moore at CBS / Hardwood Paroxysm . . . largely for his Twitter antics, but still.
J.A. Adande, while an L.A. guy, is a good writer.
Bob Ryan and Jackie Mac should go without saying.
Chad Finn covers all Boston sports, and I like him.
Paul Flannery is really, really good.
Ethan Sherwood Strauss is a good one.
I also like Tom Ziller's work.
Kevin Arnovitz is solid, and Henry Abbot, while occasionally irritating, does good work pretty often.
Zach Lowe is obvious.
Bill Simmons can write really well when he wants to, but mostly just does easy mailbag type stuff these days.
On CB, I'd like to give a shout out to Kevin O'Connor, who does good work on a regular basis, and also Eric Weiss, whose pieces are always well-written and interesting.