Stephanie over at Teaching in Room 6 is having a linky party. What book is your "go to" teacher book?
It was somewhat difficult to pick just one, but I think it would have to be Reading With Meaning by Debbie Miller--This book is amazing and changed the way I taught reading. Reading it doesn't feel like a text book, nor does it give you step by step curriculum. She is quite the inspiring lady.
Two books that are not so specific with instruction topics, but have been instrumental in how I talk to kids are The Book Whisperer by Donalyn Miller and Learning to Trust by Marilyn Watson.