I’ve had the chance of trying the Landscape Adventure Collection of Photoshop actions from Sleeklens. They are consisting of 56 landscape Photoshop actions which can be used for a variety of effects. I like the fact that they are grouped under several categories of adjustments like exposure, base editing, toning and enhancing. They also have “all in one” adjustments to simplify the work of the photographer and get the work done quicker, although this might not always work with on any photo. The actions that I’ve tried range from discreet adjustments to over the top dramatic ones. While the dramatic ones seem more interesting you have to keep in mind that the quality of a photo degrades the more adjustments are applied to it.
You can take a look at the Sleeklens website and see the several actions packs that they are offering for both Photoshop and Lightroom, as well as their other services like the professional photo editing service.