In follow-up to an old-style Wall Street Journal opinion article on the five ultimate PR books, Constantin Basturea has created a social media alternative. Nominate and vote for your own favourites here.
It’s much more interactive and participatory than my PR Books wiki – but the premise is similar (and there’s still a need for perspectives from outside the United States).
PR Studies 
Richard, I hope you and other PR practitioners from outside the US will join the site and provide a more global view on what are the fundamental PR books. CrispyNews doesn’t have too many features, but we could add country categories and use them to tag the entries, if you think that’s useful.