It's a fact the health benefits of eating fruits and vegetables outweigh the risks of pesticide exposure. However if we have information like this shopping guide from Environmental Working Group we may as well keep our exposure to toxins to a minimum.
(image credit: ewg.org)
Just a note on corn. Commodity Corn used for animal feed and biofuels is almost all produced with genetically modified (GMO) seeds, and so is some sweet corn sold for human consumption. GMO sweet corn doesn't require to be labeled as GMO in the US, you may wish to choose organic corn.
