1. Raise or Lower Volume in Very Tiny Increments
    Option-Shift-F11, Option-Shift-F12
  2. Skip To The 10%, 20%, 30% (etc.) Point In A YouTube Video
    1, 2, 3, etc.
  3. Open Applications, Utilities, Desktop, or Home Folders
    Command-Shift-A, Command-Shift-U, Command-Shift-D, and Command-Shift-H
  4. Paste Copied Text Without Formatting
  5. Switch to Previously Use App
  6. Rotate Through Web Browser Tabs
    Command-1, Command 2, etc