Being my mentor and good friend for many years now, I cannot start blogging without mentioning that Patrick Tisseghem's first book is in the shops. And guess what? It's about SharePoint.
Inside MOSS is definitely one of the best books on SharePoint 2007 and I can tell because I had a sneak preview and read almost all chapters.
Subjects like Business Data Catalog and Search are so well explained that it almost reads like a novel. As Profke is a man of code, you must not be surprised to find a lot of code samples. Quick! Get your ass from behind your pc and run to the shop to buy it! You will not be disappointed!