no... i buyed it recently...
I think that the fact washington.com is a parked page is not related to its typos value.
There are a lot of great domains parked without a full developed website, and this because the owner for some reasons is not interested in development or because he prefers making money without much effort.
I think that city domains (obviously), and related typos, can be very valuable if some informations on what the people were looking for while typing the names...
A trip? Hotels? Job, news....
What do you think?