anything with olive oil packed tins of tuna. i can't stand normal tinned tuna, but the kind packed in olive oil (not sunflower oil!), especially the imported italian stuff from the italian deli, is absolutely gorgeous.
my favourites - tuna salad nicoise & linguine with italian tuna and cherry tomatoes (i make this at least once a week, have gotten my tuna-abhorring family addicted as well!) don't know the policy on reprinting recipes from a cookbook on the web but pm for recipe if you're interested.
fortunately for me, the bf goes to italy frequently and brings loads back with him as it's kind of pricy here, but the supermarket own brand is usually OK.
i eat it plain for lunch, too. mmmmm...