I love this book as well. I think part of what makes it so good is that the patterns are discussed in a very domain-specific context and their usage is not overly abstracted. I often find it hard to see why a particular "widget" or "foo/bar" pattern or structure is used/useful, but when you put the examples in a very specific context like this, it's much easier to understand their value and remember why/when/how to use them.
I wish there were other Pattern and Software-Engineering books that discussed things in more domain-specific contexts, but I suspect game development is one of the few domains large enough, and with enough people looking for domain specific literature, to really warrant such a book.
I wish there were other Pattern and Software-Engineering books that discussed things in more domain-specific contexts, but I suspect game development is one of the few domains large enough, and with enough people looking for domain specific literature, to really warrant such a book.