I recently came across Advocates for Health In Action.
They are Wake County based. Nice resource list of community gardens, you-pick-it farms, and ways to encourage healthy and local options in schools.
Current activities mentioned in their newsletter include Healthy Brown Bag Challenge, a screening of What's on Your Plate? ( a kid friendly documentary) in Cary and a film festival put on by the Durham-Chapel Hill District Dietetic Association and the Meredith College Master of Science in Nutrition Program coming up March 25th.
I'm not involved in anyway - just thought there was a lot of good information to share!