DELICIOUS COOKING FOR DIABETICS? Help me?

My dad was diagnosed with diabetis just months ago. And this Christmas I am giving him the best present in his life. I want to collect recipes for diabetics, that are delicious and inovative. I am a great cook, but to tell you the truth, have not thought about food low in sugar, fat etc. Does anyone know, what would be the best recipe book out there or web site where I could get resources for great diabetics food? I want to start trying out the new way of preparing food as we speak, so if you have a good portion of knowledge or you are diabetic yourself, please help me out. Our whole family will thank you saving my dad.