Does anyone own either of his books, and if so do you like them, are they worth buying?

If the recipes in his books taste like the cakes and cupcakes from his shops, then I wouldn't recommend buying them.

I have his Cake Love book. For a while I tried a lot of his recipes. Very well organized (I actually thought about writing all my recipes that way). I love all the flavors in his recipes. They're different. I like his Sassy cake recipe (which is in the Food Network, by the way) and his mojito cake. He's got a good collection of different flavors in this book.