Fowler's writing is what makes the books so good: PoEAA is much more approachable than the GoF books. It's more approachable than his early books (Analysis Patterns).

I'm surprised that you didn't mention The Pragmatic Programmer..

I think that a lot of the people here (and who read your blog) could do worse than to check out "Team Geek". It's about people, not programming, but the impact it has had on me is equal to PoEAA..