I know similar questions have been asked few times on hacker news. But, instead of asking you for books that you recommend but you never read before, I feel like this question is more tangible. Now, look at your bookshelf, what books do you have?
The books I have: Core Python Programming, CSS, DHTML & AJAX, Agile Web Development with Rails, The Rails Way, The Ruby Way, SAT 2008(Zzz), Made to Stick...