I only keep a few cookbooks at my desk where I do most of my recipe research and meal planning: Mark Bittman's How to Cook Everything and How to Cook Everything Vegetarian, along with Harold McGee's On Food and Cooking. I use these more for reference than finding actual recipes, but I pull them out almost daily.
The rest of my cookbook collection is still suffering from a big cross-country move and is currently spread throughout the house in various states of disorganization!
I'm thinking that the first order of business is to bring all my cookbooks together in a place where I see them. I think that if I actually saw them more often as I go about my day, I'll be more likely to pick them up, flip through them, and find a recipe to make.
The second order of business is to organize them in a way that makes sense. For me, that's by category. I might alphabetize them within each category, but I want all my books on desserts, on bread baking, on healthy cooking, and so on to be grouped together for easy cross-referencing.
Well, I know what I'll be doing this weekend!
Do you have another system for cookbook organizing that works for you?