I don't have cravings as such, but I do keep thinking of really random things that I have to eat and I have to eat NOW, and God help the person who prevents me getting my hands on it!
I've generally just got really bad food rage - maybe it's something to do with blood sugar getting low, but if I need to eat, I'm in a foul mood until I get my hands on some food, and it's only in retrospect that I can see how unreasonable I'm being!