I find that I disagree with the flag guy at least half the time. (This goes for his A's as well.) Of his failures, for instance, I rather like Bhutan (cute dragon), Marshall Is. (airline logo-- well, I'd fly it), Sri Lanka (unusually adroit lion), Belarus (kicky side carpet), Iran (optical-illusion lettering/fringe!), and Brazil.

Some of the most interesting flags are those of Japanese prefectures. It's fascinating what can be done if you blow off the rules of Western heraldry.