Build Your Own Electronics Workshop is a great resource for anyone interested in electronics.
Electronic Circuits for the Evil Genius is a complete electronics course in just 225 pages.
CNC Robotics is a step-by-step guide to building your own CNC machine. It is an excellent starting point for anyone who is thinking about building a CNC system of any type.
Easy Microcontrol'n is a great beginners books for PICmicro users.
The PIC Microcontroller Projects book features 12 complete PICmicro projects in easy to understand BASIC.
This is a recent addition to the Tab/McGraw-Hill lineup on how to use an AVR microcontroller. The AVR datasheets are fine, but they're not as useful as this book!
The Programming & Customizing the PICmicro book is a book for beginners and features 12 project and 30 experiments.
Mechanical Devices for the Electronic Experimenter covers numerous mechanisms for robotics and electronics applications. A great resource for brainstorming!
This essential title in McGraw-Hill's ROBOT DNA SERIES is just what robotics hobbyists need to build an effective drive train and gain a full understanding of robot locomotion.