Rockler just announced the new Straight Edge Guide. Included with the system is a pair of 52" extruded aluminum edges that can be locked end-to-end or used separately to get accurate and cleaner cuts whether using a circular saw, jigsaw, or router. Also included is a power tool guide which locks a saw or router to the straight edges, keeping cuts safer and straighter by eliminating drift and kickback associated with freehand cuts.
More information is available here.
