I have created a small simple Photoshop action for sharpening images. This action uses the high pass sharpening technique which I believe is better than using unsharp mask. Within the action set I have included three small variations of the action, the only difference between them is the blending mode applied (Overlay, Soft light and Hard light). To use this action download the zip file below and extract the .atn file at your actions folder which by default is C:\Program Files\Adobe\Photoshop X\Presets\Photoshop Actions (replace the X with the photoshop version you are using). Load them at your actions palette, open the image you want to sharpen and just hit play.
Preview (100% crop)
Original ———————–> After running the action