Diet and Exercise:
MyFitnessPal – free online calorie counter/nutrition information. Also available as an app for your phone to make tracking easier. Can also track exercise, weight and some measurements. Can message fellow users who you friend.
Sparkpeople – Cincinnati based company – free diet plans, food trackers, exercise videos/tips, community support, healthy recipes. Also has app for phone.
C25K – How to start a run/walk program.