We have been eating genetically modified foods since the 1990's when they were first put on the market. By some estimates as many as 30,000 genetically modified products are for sale on the shelves today. For example, over half of the soy products available in the US are from genetically modified soybean plants.
Some Canadian honey is collected from bees that are collecting pollen from genetically modified canola plants. A goodly part of the US tomato crop is genetically modified and something less than half of the tomato seeds sold in places like walmart, lowes, and home depot are from genetically modified plants.
A great deal of corn and corn products (corn oil, flour, corn sugar, corn syrup, etc.) in the US is genetically modified. Chances are that the sweet corn you eat has been genetically modified to produce its own insecticide. About half of the sweet corn grown in the US is genetically modified.
A fair percentage of the US potato crop is genetically modified. The first virus resistant papayas were commercially grown in Hawaii in 1999. Transgenic papayas now cover about one thousand hectares, or three quarters of the total Hawaiian papaya crop.
If you like zucchini and yellow crookneck squash, there is a better than midland chance that the ones you are eating were gentetically modified.
If you eat meat, rest assured that it was fed with genetically modified feed.
Most vegetable oils in the US are made from or contain genetically modified corn, canola, soy, or cottonseed oil.
The question isn't whether you would eat them or not, but how much have you already eaten and are you suffering any ill effects from it. Personally, I am not.
If you are the worrying sort, here is a link to a booklet that will name some brands that do and do not contain genetically modified products. It isn't very long and not particularly comprehensive, but if you are prone, it might give you cause to check your lymph nodes.
http://truefoodnow.files.wordpress.com/2009/06/web_new-ge-booklet.pdf