Originally posted by colorexperts
Draw straight lines:
There are other ways to draw a straight line than using the line tool. After this tip, you may find your need to reach for the line tool reduced, in fact this may even break your addiction. While using any of the drawing tools; Brushes, Pencil, Dodge and Burn, Eraser, Blur, Sharpen and Smudge holding down the shift key will cause you to draw in a perfectly straight line either vertical or horizontal. An added feature will let you create straight lines between points by clicking, Hold down shift and click again anywhere to join the 2 points.
Easy loading of Layer Styles:
Start Photoshop> Open your email program if they were emailed to you or navigate to their files on the hard disk> right click/Option Click, then select open and the style set will be loaded automatically
Closing Multiple windows:
How long would it take you to close all these documents in Photoshop? Just hold down the shift key when you go File>close and Photoshop will close all the open documents.