Hixie needs your help. Document examples of augmented video (or audio) such as captioned or subtitled media.
Joe has written a rousing call to arms on the state of online captioning. It's a lengthy article but well worth reading.
Apple have gathered all their resources about accessibility into one handy site. I sense the work of James Craig.
Now you can perform data analysis on the subtitles of the most recent series of Doctor Who, courtesy of the brilliant Matthew Somerville.
Joe's latest project is deliberately garish.