From page 52 of the March 2004 The Costco Connection comes the story of Rob Baur of Lake Oswego, Oregon. Seems Rob is a huge fan of The Simpsons. So much so that he brought one of his favorite episodes to life.
In 1999, Homer created the tomacco, a combo tomato/tobacco plant. Once local folks taste his creation they are hooked, even though they are getting sick because of it. Baur, finding this intriguing, "grafted a tomato plant onto tobacco roots, and cartoon became reality." Rob will exchange with the writer of the tomacco episode "fruit from his plant" for an "autographed copy of the script from the episode." All this, while working full time at a local waste-water treatment plant. Go Rob.