In addition to freeing the power of adjustment layers from a static, modal dialog (via the Adjustments panel), CS4 now supports the loading and saving of adjustment layer presets, such as Levels, Curves, Hue/Saturation, and Selective Color. (You can select these options from the Adjustment panel’s flyout menu.) The presets files are very small and easily distributed. To share your own, just copy the corresponding file from the Preset folder (inside the Photoshop Applications folder) and pass it on.