This book's main problems, and they're minor ones, are twofold. The book features anime that weren't available in the US as of the date the book was released, and the book features anime which have since gone out of print. The latter problem isn't the author's fault in the slightest - they can't have predicted what would or would not still be in print years down the road.
On the other hand, the shows that aren't available are a bit more of a nuisance, as in order for prospective fans of anime to check out those works, they would have, at the time, needed to rely on fansubs, which is a bit much to ask of new fans. That said, some of the offending works have since been licensed for release via streaming (particularly the Captain Harlock TV series). However, other works aren't as accessible, like Mazinger Z and Cyborg 009.
I still think the book holds up well as a good piece of reference material though. I'd say that it doesn't work as well as a reference material for new fans who are looking for material to find on their own, as much as it works as a gift to a new fan from a long time fan, who wants to give the new fan an idea of what's out there, wants to help the new fan figure out what he might like, and who knows how to get ahold of some of the harder to find works, in case those catch the new fan's attention.