InstantShot!

InstantShot! is a great way to take screenshots on MacOSX. This neat little tool allows you take do the usual screenshot type things like your full screen, and a portion of the screen, as well as allow you to set a timer to take a screenshot. The latest version allows you to take a screenshot with a background to cover the desktop so you don’t have your icons everywhere in the screenshot. Nice.
Via GlennWolsey