The only things I am not eating is unpasterised stuff (not that I have ever seen any in shops) and making sure everything is well cooked.
Link from MrsBadger seems to cover it, though it does say not to eat cakes etc....I don't seem to have taken that point on board but if the baby wants a family-sized angel cake and extra large belgian chocolate eclairs then who am I to argue?
I'm also just steering clear of alcohol (apart from a half-glass of wine every few weeks) and unpasteurised milk products. Had a couple of miserable weeks without brie and blue cheese before I found out that most of it is made with pasteurised milk, and it's probably fine. I also wouldn't eat raw oysters at this point, or anything else obviously swimming in bacteria.
That said, I've been warned to not eat too much ice cream (plus other refined sugar) because it can increase your chances of getting gestational diabetes.
I really hate to be the one to break this bad news, but the problem with brie and other mould-ripened cheese is not that the milk is unpasturised. So all those yummy cheeses should be avoided unfortunately because the way they are produced with the mould makes them more prone to grow bacteria like listeria.