I don't own any .orgs that I intend to sell. I am a .org buyer and a .org developer.
My best .orgs are some pure geos of cities.
I've shared my opinion on .org many times. .com is virtually always the best decision, however, .org is a TLD that 'makes sense' and occupies a permanent space in the minds of the public. I believe the .com instinct is severely overrated here in the year 2010, particularly as it pertains to using a .org. People know .org, people comprehend .org, people understand .org and .org even has a finite and desirable purpose that .com doesn't.
I like .org when the keywords aren't blatantly commercial (discountMP3players.org is just bizarre). Good rule of thumb; if you're selling products, .com is the trivially easy choice. Anything that involves gathering the attentions of people is well served by .org and in some cases, even preferable to .com.
In 2003, I hand-reg'd
Americorps NCCC (dot) com (I am an alum of the programs). I neglected to register the .org at that time, since everything was "DOT COM OR DIE!!!!" Obviously, once I started 'getting' domain names, I severely regretted not getting the .org. It was owned by a rather tenacious possessor who refused to get rid of it (I wound up getting it this year when the guy FINALLY let it drop). But yeah. .org. Good stuff.
Kinda funny that there are domainers who still don't 'get it' on .org and subscribed to outdated TLD hierarchies where .net is always the preferable choice to .org... LOL @ them. The sale of poker.org means nothing here, either.