Security Now on TWIT tv covered Bitcoin today. Steve Gibson does a pretty decent job describing it. http://twit.tv/sn287 Bitcoin coverage is from 0:41:25 to the end of the podcast.
This was an excellent explanation, and it's a really brilliant idea. And the fact that it already has an impressive perceived value (parity with USD), I would totally accept it as a form of payment. It will be interesting to see what this does over time.
I followed all kinds of links and couldn't figure out bitcoins. This link actually answered some questions. Sounds really fascinating. Definitely will look into this more.