First, the megacorp that is sucking the life out of food:
The World According to MonsantoGMOs and How to Avoid ThemAt the end of the article there is a buying guide that shows which foods are likely to contain GMOs, which foods may contain them and which foods are (so far) not available on the market in a GMO form.
As a result of this info, I feel much more confident when shopping for my food (and more frugal!).