David Crane's 2600 Magic. I haven't seen the app yet, but it sounds like it amounts to a $2 ebook on Atari 2600 programming. Sounds awesome.
This is BrainLog, a blog by Dan Sanderson. Older entries, from October 1999 through August 2010, are preserved for posterity, but are no longer maintained. See the front page and newer entries.
February 16, 2010