What are some healthy chocolate bars for sweet tooth?

I'm on a diet and I've been craving chocolate for the past 2 days. What are some good brands or websites (bakers) I can find nutritional bars with nutritional information provided? Even declicious granola bars would be great. I usually eat semi-sweet chocolate or dark chocolate chunks mixed with dried berries. I like snickers, watchamacallit, See's chocolate (MayFair, Pecan Bud), kit kat, butterfinger, baby ruth, cookies n creme hershey,mars bar, huggies kisses...