ScreenFlow is a new application for creating amazing screen recordings on your Mac. Using a unique new screen capture system, powerful enough to capture the contents of your entire desktop at the same time as your video camera, microphone and computer's audio, you'll be creating incredible screencasts in no time. The finished result is a QuickTime movie, ready for publishing to your website or blog.
Mac OS X only: Freeware app InstantShot is a menubar app that takes screenshots of your Mac desktop, windows, or selection, and saves them in one of three formats.