If you need to do a "Mail Merge" to print out personalized documents from Pages, you can do it with a simple script. A table from Numbers can be used to customize text boxes in the Pages document and then you can print them all at once.
If you need a clock or countdown timer in your iMovie video, you can create one in Keynote and export it to use in iMovie. You can manually create each second as a slide, or use this simple script to add all of the slides automatically. In iMovie you can adjust the size, color and even reverse the overlay to count down or up.
Many Mac users wish there was a way to create a new text file in the Finder just like you can in Windows. With the help of a simple Automator service you can add this to your Mac, and even customize how it works.
You can use JXA in the Script Editor or Automator to set the location of a window to an exact location and size. It is easy to set up the one-line script and reuse it by simply changing the application name and size numbers. You can also create an Automator service to repeat a setting you use often.