I think I have written about Automator before, and I still think it is a tool that I definitely underutilize and that most people don't frequently take advantage of. I needed to resize a bunch of images quickly and I thought I remembered how to do it in Photoshop but I wanted something that was quicker and easier to re-run. After dragging in 4 commands (it took a bit of trial and error) I got the result I wanted.
When I press Run, I get asked to choose a folder. After that, it copied the photos, opened the copies and resized them all. Now I did have a bunch of photos open on my screen but I just quit Preview and the process was all done.