There's a new magazine out of France, and it's kinda cool in that weird, hipster-y PoMo sort of way. It's called Yummy, and its calling itself a "JunkFoodDesignMagazine" (because spaces between words are so passé). The magazine - and web site - are mostly en Français, but obviously, art transcends language, and all that jazz, so your lack of French-speaking skills will not hinder your appreciation - or revulsion - from the site.
The featured art runs the gambit from Whodonut?, Virginia Barre's slightly disturbing illustrations of people living in a fast food nation, to Show Her, which seems to be a big excuse for the artist to show photos of a half-naked woman in a rainstorm, occasionally holding a soda bottle (hence, the food connection, I suppose).
Go check it out - you might just be inspired to make some food art of your own. Or just be really grossed out.
As we've seen, there are museums for all sorts of food-related items: 
Cakes so amazing they'd be hard to cut into
Fruit juice: An invitation to diabetes?
Morbid thoughts? Have a cookie
