What is the Best Free Domain?

I am currently using a domain from:
http://www.co.cc/
However, the domain name only lasts a year before you have to pay for it.

Due to my age and subsequent inability (and indeed lack of desire) to pay for things online, I am looking for another provider of a free domain name.

I have looked at:
http://www.freedomain.co.nr/
and it seems okey apart from the fact that I don’t think the basic package supports email – tell me what you experience with co.nr is.

Know any other free domain providers?
I don’t mind displaying a small backlink / advert for them but I don’t want popups or for a certain percentage of users to be redirected via adverts, etc

I know about the ICANN and how there is no such thing as a free lunch so don’t write me a lecture please

Colin