"The Human Camera" premiered Sept. 17 on BBC America as part of BBC America Reveals. It will show again on Sept. 24 and Sept. 25.
The documentary focuses on Steven Wiltshire, "an autistic artist who has the extraordinary ability to look at a building and make a detailed sketch of it from memory. In this documentary, we witness Steven draw a panoramic view of the entire London skyline after studying it for only 15 minutes from a helicopter."
I wrote an entry about Wiltshire back in May.