I almost always find thoughtful discussion of how to write and convey ideas to be inspirational. Lyn Dupre's book, Bugs in Writing (http://www.amazon.com/BUGS-Writing-Revised-Edition-Debugging...) is good about some of the mechanics.

Likewise, thoughtful articles about how to structure and write good computer code are almost always interesting.

Lyn Dupre book is worth a look. She has copy-edited Don Knuth, amongst others.

http://www.amazon.com/BUGS-Writing-Revised-Guide-Debugging/d...

I bought the first edition of Bugs In Writing (http://www.amazon.com/BUGS-Writing-Revised-Guide-Debugging/d...) years ago, and have found it an excellent reference.

It's aimed at technical writers and is a beautifully written book. Highly reccomended.

[Edit: I've just been reading the reviews on Amazon, and it seems a few people are put off by the 'cuteness' of the book, feeling it's not professional. The book has a strong personality (if a book can have such a thing) and lots of cat references/pics, so if you're likely to find that annoying it's not the book for you. Myself, I liked it]