i find veggie stir frys great - i use spray oil, lots of veg like onions, mushrooms, sweetcorn, baby corn, bean sprouts, carrots etc, with noddles garlic and soy sauce. you can get lean chicken if you like, thats so nice!
weight watchers do some great cook in sauces too, like chilli or sweet and sour and lots of different dinners etc.
as mentioned, salad is fab if you like it, i'm not a fan, but love fruits, and tinned fruit in fruit juice is very good.
i swap foods too - like brown rice, wholemeal bread, low fat cheese and wholemeal pasta.