TURNING OFF THE CROP TOOL OVERLAY
I have to say this tip rocks if you use Adobe Camera Raw a lot. See, in previous versions of Camera Raw, if you cropped your photo you'd still see all of the cropped area around it as you were working (as shown here). It was really annoying and you never got to see your real photo until you opened it in Photoshop. Now in the new version of Camera Raw, you can get rid of that crop overlay stuff and actually see your photo the way that it's going to look by clicking on another tool. So when you're done cropping just press the letter Z key, for example, to go to the Zoom tool and get out of crop mode. Trust me, it's a lot easier to work on your photo this way.