The Mockingbird Foundation
I've had the chance to work with this organization for over ten years (wow). We've raised over $600,000 for music education programs, from products such as the definitive guide to Phish (The Phish Companion) and the tribute cd Sharin' In The Groove (featuring Dave Matthews, Jimmy Buffet, Arlo Guthrie, and many others). Whether or not you like Phish, this is a foundation well worth your interest (and support)!
Shakespeare & Company
An international center for live performance, actor training, arts education and scholarship. Also, I used to work here.
Berkshire Community Radio
A wonderful radio station, with about 90 locally-produced programs (!), plus selected syndicated shows such as "Democracy Now". My indie rock show "Found Sounds" is on indefinite hiatus.
This is a stunning Web site, including multiple ways to read the book and a host of essays, contextural info + other accompanying materials. A work of art, really.
About Last Night
The great blog chiefly maintained by Terry Teachout, the author, librettist, and theatre critic for the Wall Street Journal.
The original online catalog of free e-books.