After learning what ingredients are corn derived and then looking through the pantry, it seems as though most processed foods contain at least one corn derived ingredient. Although one can argue that corn is a grain and not bad for you, remember that 85% or corn in the United States is genetically modified. It just seems like a big science experiment, feed the population tons and tons of genetically modified corn and see what happens 30 years down the road. I have always been taught to eat a well balanced diet and eating corn derived ingredients in every meal doesn't seem like the best idea to maintain a healthy diet.
Below is a list of ingredients that are potentially corn derived. This is not a complete list, only a subset. I am sure there are countless other ingredients that are corn derived that are not listed below.
baking powder - Not all baking powder's contain corn, but the most popular ones contain corn starch.
caramel coloring - caramel color is one of the oldest food colorings and is found in colas. Caramel can be made using many food grade sweeteners and is often made from dextrose (corn sugar).
maltodextrin - is produced from a starch and in the US this starch is usually corn starch. It is moderately sweet and almost flavorless and is used frequently in the making of soda and candy.
dextrose - is also known as glucose or corn sugar. dextrose is a simple sugar usually made from corn.
Corn “anything” like corn flour, corn starch, corn gluten, corn syrup, corn meal, corn oil
hydrolyzed corn protein - Used as a flavor enhancer, people that are sensitive to MSG should avoid hydrolyzed corn protein due to the high levels of glutamate.
monoglycerides / diglycerides - is added to foods like ice cream, chewing gum to act as an emulsifier, helping to mix ingredients that normally wouldn't mix well like water and oil. mono- and diglycerides are made from plant oils like corn or animal fats.
starch - added starch in foods most commonly come from corn but can come from other sources.
vanilla extract - some brands add corn syrup to the extract.
Vegetable “anything” - Unless you know for sure, products like vegetable broth, vegetable shortening, vegetable oil could be derived from corn.
xantham gum - is a food thickening agent that is produced from the fermentation of glucose (corn sugar), sucrose, or lactose. Tooth paste commonly contains xantham gum.

Just for fun I reached into the pantry and pulled out a packet of fajita seasoning mix. I flipped over the packet and here is the list of ingredients that make up the mix.
Corn Starch
Maltodextrin
Salt
Sugar
Monosodium Glutamate (MSG)
Spice
Chili Pepper
Partially Hydrogenated Soybean Oil
Citric Acid
Natural Flavor
Silicon Dioxide
Natural Smoke Flavor
Yeast Extract
Ethoxyquin
The first two main ingredients are corn derived! Some other scary ingredients include MSG, Natural Smoke Flavor (whatever this is...), and Ethoxyquin. After careful analysis it was decided the best place for the fajita seasoning mix was the trash can.