It's very enlightening, as well as entertaining. Be sure you rent it on DVD, and watch at least TWO of the deleted scenes, or special features. One showcases the degradation of some popular menu items when left in large glass candy jars. One of them seemingly does NOT degrade! The most interesting one, however, is the interview with the author of a book from four years ago, "Fast Food Nation". While he is clearly an agenda-driven liberal, he still has a lot of info to offer. So, don't be tempted to "shoot the messenger" and bear with it.