You may know flaxseed - the small brown seed that are full of fiber (and a good amount of oil as well). I was looking through some of the specialty flours at the store recently and came across something called flaxseed meal. It's basically ground up flasxseed. The neat thing about it is you can substitute it for oil or shortening in any baking recipe.
So far I've made some zucchini/carrot rolls that turned out great. But I'm really pleased with it in my weekly pizza. The crust turns out more crispy and tastes better than with olive oil. And each slice has about 1.5 grams extra fiber and 1 gram less fat, and 15 fewer calories. Not bad!