A quick way to toss a bunch of files and folders into a new folder is to select them and use ⌃-⌘-N (Finder > New Folder with Selection). This Read More
Contacts (previously Address Book) has long allowed you to select one or more cards and choose Card > Merge Selected Cards to help you clean up Read More
OS X has long had text-to-speech features, but Apple added dictation in Mountain Lion with, of course, an obvious influence from iOS. By default, Read More
If you use more than a couple full-screen apps in Lion or Mountain Lion, you can rearrange them in Mission Control to make switching between them Read More