I think that .orgs have been undervalued for quite some time.
Although they represent a very small portion of my developed sites (and total portfolio), the .orgs I've developed have been surprisingly successful. Not to buy into PIR's marketing, but I think there is definitely a certain level of implied trust that .org brings that is quite underappreciated. This is especially true in the healthcare and crafts/hobbies spaces, imho.
Without a doubt, I am on the lookout for quality one word .org domains and will be making them a larger part of my portfolio in 2010-11.