Sanus VisionMounts allow you to lift your monitor off of your desk and can give your monitor a new range of motion. Available in a variety of styles and finishes, there's one that will fit almost any monitor.
The mounts attach to the back of your desk (or even a grommet) with a vise-like mechanism --- without the use of any tools. Once you've installed the monitor, it allows to tilt, swivel, roll and extend your monitor just a you would like. The two finishes, a shiny silver or more subdued graphite, would complement any decor.
They range in price for $129-169, depending on your needs, and can be purchased directly from Sanus.