Several people are going to recommend The C Programming Language by Kernighan & Ritchie; it's a good book, but it's getting a bit long in the tooth and doesn't cover the C99 standard. However, it ...

Cocoa Programming in Mac OS X ($31.49 on Amazon) There are really two excellent books that should be on every Mac developer's bookshelf. First is a book by the magnificent Aaron Hillegass. Aaron ...

This book introduces C-based parallel programming techniques for creating these applications, verifying them, and moving them into FPGA hardware.

I am certain that this book will sell well and if used as a companion to another C programming book will be useful to many.