idiot.ws
nationaltv.net
These 2 are good. Except for their extension. The .net being much better than the .ws would probably be worth more too.
NationalTV.net could fetch $50-$100 and idiot.ws would not fetch more than $50. In the future, I would suggest that you only register a .net if it is a really good domain or recieves good traffic (exisitng links, typ-ins etc.).
Good Luck!