At some point last year something made me start noticing how may products have HFCS in them. It's pure insanity. And apparently it's all thanks to subsidizing the corn industry which produces such an overabundance of the stuff that they had to put it somewhere. I read about it a while back but I need to do more looking into the subject. But yeah, go to your average grocery store, and pick up a random item off the shelf... odds are it will have HFCS in it. It's actually difficult to cut it out of your diet completely.

EDIT: The Wikipedia page has some interesting facts and links...

http://en.wikipedia.org/wiki/High_fructose_corn_syrup

EDIT 2: And here's a pretty good list of some basic stuff, by no means comprehensive, but LONG.

http://www.accidentalhedonist.com/index.php/2005/06/09/foods_and_products_containing_high_fruct