From BlackBall Software:
Screen Grabber allows you to take screenshots with only a few mouse clicks. It integrates with the print screen button on your keyboard, or it activates from the system tray. With it, you can crop, comment, blur, magnify, freehand draw, or add speech bubbles to your images. Version 2.0 supports dual monitors, works on accelerated game images, and has a full-screen option, to include your system tray and taskbar in the screenshot. All work is archived and can be loaded later for re-editing. All common image formats are supported, and the application has customizable fonts and colors, reduced memory consumption, an optional floating toolbar, a new magnify and zoom tool, and a new speech bubble tool.