Here's Dave's blog, with description of the accident and other details. You can leave get well comments, too!
http://davesbikeblog.blogspot.com/
He's going to be okay, but this is frightening and so ironic, because it happened the very day that he last posted at the end of this thread about the anti-cyclist blogger:
http://www.bikeforums.net/showthread.php?t=250265