I'm not a huge tour person generally -- I get antsy and like to explore new cities on my own (or maybe just go shopping). But a food tour is something I definitely think that I could handle. I've been hearing about them a lot lately, as many cities now offer them. More recently, I've come across City Food Tours, which offers both walking and coach tours in Philadelphia and New York City. This company has gotten a bit of press, and they even offer personalized group packages. Philadelphia also offers tours of Reading Terminal Market, one of my favorite spots in the city, and Chinatown tours with some foodie destinations.
I've never taken a food tour, but I'd love to hear accounts from those of you have had -- especially tours that you found especially great or awful.
(Thanks, Marisa for the great picture!)
If you are an culinarily inspired traveler like me (not that I travel
much, but I'm not going anywhere unless there will be very good food involved), but schlepping through
jungles to eat beating cobra's hearts like 
America's Most Hated Foods
Slashfood Ate (8): Ways to create the perfect cheese plate
A good trick for saving summer herbs for future use
