Photomerge Panorama
Everyone likes a panorama—which is why smartphones and compact cameras have an inbuilt fully automated panorama feature. These usually work well—I find myself using my iPhone for this all the time because it's so convenient. But if you only ever look at the results produced by a smartphone, and its small screen, you'll never get to fully appreciate what a bunch of high-resolution images and Elements' Photomerge Panorama can offer a serious photographer.
Save a file and display it on a large screen and you'll begin to appreciate how much better multiple high-resolution sections assembled using Photomerge can be. It's a powerful feature.