Combining off-the-shelf LCDs with arm and stand supports is one way of efficiently utilizing multiple monitors while maximizing space savings since monitors can be arranged in rows, on walls or from the ceiling. Most arms and stands are based on VESA standards. Always check product specifications to ensure compatibility with the supporting systems.
Link to 9X Media. Sponser of the Multiple Monitors.org site

Link to 9X Media site Link to Multimon

VESA develops open display and display interface standards to ensure interoperability with the goal of encouraging innovation and market growth.
9X Media is VESA compliant and offers a desktop system that supports from 2-72 screens as well as a modular video wall system that supports from 2 to 144 LCD screens for the corporate, tradeshow, government, and education markets.

Ergotron Flat Panel Mounting Solutions allow for - Instantl lift, swing, tilt and rotate for optimum ergonomic positioning. These arms and pivots, most VESA® mounting compliant, offer a host of benefits for mounting LCD monitors, tablet PCs, LCD televisions and plasma displays.

Supplies a range of LCD arm systems from SPACEDEC for mounting computer monitors. Desk, wall, pole, and ceiling mounts for industrial environments.