Well, color me informed.

I lived with a deaf person for a few months, so I got used to watching television with closed captioning. However, it never occurred to me that there is also a viewing alternative for the blind. It's known as DVS or "Descriptive Video Service." Based on the MP3 of a Simpsons episode I'm listening to right now, it's actually quite descriptive, interspersing original audio from the show with vocal descriptions from a narrator. This is better than say, television stations who simulcast on radio. Once while driving back to Minneapolis I listened to a program for twenty minutes before I figured out it was Power Rangers.

[via Metafilter]