One Website I’ve been using lately in an effort to improve my overall fitness is My Pyramid Tracker. You enter what you eat each day as well as your activities, and it gives you an indication of how what you eat fits with the recommendations as well as how your activities give you the recommended activity load.
I like the idea, but sometimes it can be hard to find what you ate in their list of items. Additionally, if you do the comprehensive activity tracking, that can be quite tedious.
Find the site at http://www.mypyramidtracker.gov/Default.htm [Site is now superseded by https://www.supertracker.usda.gov/default.aspx].