I've posted about him before, but think this year I will finally take the plunge and go with him on one of his tours. They are a bargin with a $20 suggested donation the next one he is doing is in Prospect park on March 17th.
You can sign up for tours on his website.
This is a video by another forager Vladimir Danilov who learned about foraging from the Wildman. For more information about how to make the most of NYC's food resources check out this cool website.