I just pre-ordered the Fitbit Aria WiFi Smart Scale (Amazon Link) and I'm about as excited as a nerd could be about tracking how fat I am getting drinking double IPAs…
It integrates with the new Fitbit and wirelessly sends your weight to your Fitbit Dashboard. I haven't had a scale in years but, after tracking my data with the Fitbit pretty seriously for a few weeks, I am kind of curious about integrating the weight tracking, even if it is just for completeness' sake.
I'm not sure when it ships, but I'll probably end up writing a short review here after I use it for a while, in case you want a "canary in the coal mine" to try it out first.