Apago's PDF Enhancer may not be the sort of utility every Mac user needs, but for certain professionals, it's a must-have for automating the creation, standardization, and optimization of PDF documents (we rely on it heavily for our Take Control ebooks). Version 3.5 offers faster processing speeds (key in a production environment), improved reliability, clean-up of scanned documents, AES security, and improved font and color handling. With version 3.5, Apago has slimmed the product line, dropping the Standard and Server editions to focus on the Professional and Advanced Server editions. ($349 (Professional)/$1,999 (Advanced Server) new, upgrade prices vary)
Two Shortcuts for App Exposé
If you want to see all the windows for a particular app via App Exposé, there are two hidden shortcuts. For either, start by pressing Command-Tab to bring up the app switcher. Then, while still holding down the Command key, press either the 1 key or the up arrow. That puts you into App Expose mode, with all of an app's windows showing, and recent documents in a row across the bottom of the screen. Let up on the Command key, and then you can press Tab to cycle through all the running apps.