This is the book I've just started reading.
It's by the same author of "The Tipping Point".
The premise: There are things that we know in a blink of an eye. Things that we know before we know that we know them. I'm just getting into it, but I think this will finally explain what all that love-at-first-sight thing is all about.
If human perception/conciousness bores you, give it a pass. But if you're even slightly perked by the premise, you will definitely love this book.