I love Harold McGee and totally agree with Meg, this book is a must in your kitchen!
Bill Buford gushes about Harold McGee over at NPR: "Bill Buford gushes about Harold McGee over at NPR. If you don't have McGee's On Food and Cooking: The Science and Lore of the Kitchen in your kitchen, you are missing a critical component of your food library. Every time I open it, I'm lose myself and just want to read forever. It's perfect for melding of my geeky side and my food side."