A soon-to-be-published paper by Caltech engineers showed that an earthquake with a similar intensity of the one that struck Chichi, Taiwan in 1999 would bring down or render unusable numerous steel frame high rises in Los Angeles.
We had the wonderful Portland New Yorker article, that scared everybody. Now we have the New York Times version for San Fran. It's a great article, and it has weird interactive pictures and stuff. Just like tv!
The Taiwan earthquake was 50 to 60 cm/s. Great articles on it confirmed the use of PGV for these things. It was ignored by the US. This article will probably use PGA, the dingies.
However, I still vote for Oklahoma as the next big disaster quake. :)