For the last month, I've been tracking what I eat with MyFitnessPal, and have been tracking my weight every morning with a Withings wifi scale. It's extremely powerful when the data is collected effortlessly, and for the first time in my life, I'm on track to really change some unhealthy habits. Entering food in MFP is still a PITA, but I've managed to keep it up so far.
It's been one of my dream projects to design a personal dashboard like this, especially in the style of the Iron Man movies. This website has exceeded everything I imagined. I hope it becomes open source one day, and that I can contribute a ton of new integrations and sections. Or if not, please let me pay to use this service!
[1]: https://tictrac.com