I will give you the inside scoop on another one of my weight loss tools. Nike + GPS.
It tracks Time, Distance and Calories burned for running and walking.
I have an iPhone so I can't tell you how it works on just a iPod Touch. But is a pretty darn cool tool on the iPhone. Well worth the $1.99 for the App. I have found it pushes me to continually set new goals. Even Mason will ask me if we have beat our time or distance. The maps are extremely accurate, always fun to see where I slow down or speed up. If you have an iPhone you need to add it to your collection. And if you don't have an iPhone get one and then get the App.
I told you I had become a bit obsessed with tracking everything. The break was much needed.