DKJ-Crop is a free hotoshop script/action for cropping photos. Isn't that already built into Photoshop, you may ask? Yes, but DKJ-Crop comes with a lot of convenient sizes that you otherwise would have to define as presets. In particular, DKJ-Crop "knows" about the print sizes from Prints by DKJ so you don't have to remember dpi settings, colour profiles and how much to add for trimming and canvas wrap-around. Also, DKJ-Crop informs you whether the photo needs to be enlarged.