Interesting idea, and there's a lot to take in here. Others have noted that you don't really read this book are much as peruse it, and that's my experience: I read the first half dozen or so, then flipped around a bit.

While the info is interesting, it suffers from a big case of "so what?" A lot of people are covered, but none in depth, and there are no patterns.

If I had bought a copy I could see myself referring back to it as I come across new people ("I wonder if they're in there?").

Not a waste of time at all, but not the most enlightening read, either.