Once you've gone beyond the Perl canon, which books do you recommend to new programmers? Which ones took you from being an intermediate programmer to a master (and don't be shy, because I know some of you are modest masters ;)

I've been thinking about this over the last year as I've added footnotes to Learning Perl and Intermediate Perl, and also because various people I talk to fairly regularly seem to recommended a lot of books this year. I also recently completed a business consulting project where I recommended to the client a reading list for understanding the techie mind (and how to control it, muahahahaha!)

I've known about Joel Spolsky's recommendations, and I have most of those on my shelf.

Allison Randal recommended some non-techy books, Necessary Losses and Imperfect Control by Judith Viorst.

One of the O'Reilly editors told me about Dear Scott, Dear Max, but that's mostly something interesting to writers.

Someone else recommended a Ship It! A Practical Guide to Successful Software Services from the Pragmatic Bookshelf. Those always seem to be good books.

I have a waist high stack of other books various techies have recommended, and I have no time to read them. I need to pick out the ones I should read and recommend to junior programmers. I'm sure many have slipped past me.