I know what you mean about the oil, but I personally prefer @turkay1's method better. Especially when there is a diet restriction and you just can't have the fat, it's a good alternative. Of course, it tastes slightly different but not that much. Depending on how you make it, it can taste even better than it did with fat.
I don't add any oil into my muffin batter either. I just spray muffin tins with oil spray. In fact, an easy way to reduce fat in your diet is simply to use an oil spray. You need less oil to cook this way.
Instead of the oil in my batter, I add soy milk. Feel free to add any kind, but I like to add the vanilla nonfat soy milk. It's delicious! I add 1 1/2 cups of soy milk per 2 1/2 cups flour. You could also use almond milk instead of soy milk if you want.