Go ahead and eat your bleu cheese... LOL! As a previous poster said, the only real risk is if the cheese isn't pasturized... And, most cheeses offered in the US ARE pasturized... So, go right ahead and indulge.
Also, a glass of wine here and there, or even a glass every day, is absolutely fine. Actually, while it doesn't help the actual PRODUCTION of milk, a beer right before or during feedings can actually assist w/ the let-down process. The general rule of thumb for Drinking and Nursing is this: Too drunk to drive, too drunk to nurse. And, it has little to do w/ the ammount of alcohol that might be excreted into the breastmilk (which is whatever the mother's BAC is, the ammount excreted into the breastmilk would be 1/10th of that. So, let's say a mother's BAC is 0.03%, the possible ammount excreted would be 0.003%) It's basically the premise of if you're too intoxicated to drive a car (or anything else), there is NO way that you should be either Breastfeeding a baby, or Feeding a baby a bottle- but only because you are not in a position to be safe enough to be doing ANY caring of a small child.
If you want further information about what you can/can't do while Breastfeeding, check with either an IBCLC (International Board Certified Lactation Consultant (not these run of the mill RN's who have had a class or two on breastfeeding, therefor call themselves an LC)), check w/ a LLLI leader, or there's a couple good websites you can check out (www.kellymom.com, www.breastfeeding.com, and a host of others). You'd be surprised at the total LACK of education most Dr's and Nurses have on Human Milk Production, Lactation, and Breastfeeding in general... Even the most "Pro-Breastfeeding" Ped's can be VERY misinformed, as infant nutrition isn't their specialty- medicine and preventative care in infants and children is what their specialty is.