I love the Blindsight series... had no idea they were available with Creative Commons license!

Another fiction that uses blindsight as part of the story is 'As She Climbed Across The Table' it has been a long time since I read it, but I think it was used to observe a quantum effect without being affected by [concious] observation. Didn't make much sense to me at the time but it's a book I often recommend to people that think they don't like science fiction.