Black Pepper
http://www.whfoods.com/genpage.php?tnam
Mushrooms
http://www.healthcastle.com/herb_mushro
Mustard
http://www.globalgourmet.com/food/egg/e
Onions
http://ri.essortment.com/garlichealthon
Sushi
(don't click this link, lots of ads; I will paste below)
http://www.soyouwanna.com/site/syws/sus
Contrary to popular belief, sushi does not mean raw seafood; instead, it refers to the vinegared rice that can (but need not) be paired with raw seafood. So even vegetarians and those hell-bent on having their meals cooked can be satisfied by sushi. Some sushi contains only rice and veggies.
Sushi can be easily classified as a health food, being low in fat and calories while high protein. Nori (the seaweed, remember?) is extremely high in vitamins A, B1, B2, B6, Niacin, and C.
And even a little wine/alcohol once in a while.
http://www.medicalfriendsofwine.org/hea
In reality I think a lot of foods have valuable properties that we overlook. It's just that the scientests or whoever research something long enough and realize something about it they hadn't before. Remember eggs? "They're good for you!" "Oh no wait, they're bad for you!" "No nevermind, they ARE good for you!"
My motto is..... everything, in moderation.