$299 Apple has built a completely new, faster, cleaner, and more intuitive digital video editing package with Final Cut Pro X 10.0.3. While some professionals are still kicking and screaming about the changes it brings, they'll eventually be won over by Final Cut Pro X's significant speed and usability advances. Besides, Apple and third party developers have already addressed a significant portion of their original objections. Meanwhile, prosumer video enthusiasts get a less daunting upgrade path to a pro-level Mac editor.
The first recommendation I have for Mac users has to be Evernote. The app has been recommended highly for the longest time on a variety of platforms, and using it makes you see why.
Free Anyone in need of a lightweight, easy-to-use screen capturing and editing tool will find a lot to like in Skitch. The free app makes it incredibly simple to annotate, resize, crop, and add shapes, lines, arrows, and watermarks to photos on your desktop or ones snapped with a webcam. It doesn't perform functions you'd find in high-end image editors like Adobe Photoshop CS5, but that's not what it's intended to do. Skitch is all about quick, effective edits—and it does its job extremely well.