Eyes for your desktop or menu bar.
Eyeballs is a fun Mac OS X application that gives you a set of eyeballs in your menu bar or on your desktop. The eyes watch the cursor move around as you work. They get sleepy depending on how busy you’re keeping the cursor, and they blink periodically. They are extremely configurable, in terms of the colors they use, their eyelid and pupil style, how sleepy they are, and a bunch of other things. Custom skins are also supported.
Shareware for Mac OS X