Blindsight, Blindsight, Blindsight!
Unfortunately, many many of the people I recommend it to tell me it's too brainy and/or too complicated and/or lacking sympathetic characters (and one of my friends said it was too mathy, which boggled me because I'm liberal arts all over and found it just the right amount of mathy). So I don't expect it to do well here, alas. But it's sooooooooooooooooooooo good. Loved, loved, loved it.
Loved. It.