I picked one up last night. Interestingly I had to uninstall McAffee Privacy Service for it to work, but got it setup. Another tidbit I had not noticed is there is a limit of 5 extenders per MCE.
The core system comes only with a composite cable. While the TV I was testing with was old and does not have HD inputs, composite is pretty bad. I have an s-video cable coming to see how that is, but I suspect this may help push me into finally upgrading that TV to a flat panel.
It was nice seeing it work though. Still have to research some of the new things that were proposed for My Movies and how to solve the whole video issue, but initial look was real nice.
Thanks for the feedback.