I'm sad, another little piece of my weightlifting childhood gone.
I'll admit, he got a little wacky sometimes, but the Poliquin Principles series of books are still worthwhile classics in there field. One of the first authors to blend dry training science with magazine style prose successfully. Another thing that should be mentioned is that he was always good about giving credit where it was due. Old timers? Young upstarts? If Poliquin like you, and thought you had something to offer, he'd mention it.
RIP.