Camtasia is giving away a slightly older version of their famous screen-capture software, Snag-it, that lets you go beyond the “Prnt Scrn” button.
Here’s where you can download it.
A Print-Screen Tip
If you press the “Alt” + “Prt Scrn” buttons together, you will capture only the front-most (active) window – which means you no longer have to capture your entire screen along with pieces of your desktop and other windows open, just to get a screenshot of your browser window.
Also, it helps to reduce the size of the browser (or whatever window you’re trying to get a screen-shot of) first, and re-size it to a much smaller size before hitting “Alt” + “Prnt Scrn”. That way you won’t get a gigantic image when you’re just trying to capture just a small portion of the window.