Once you see Festool’s new parallel guide system, you may start to question whether you really need your table saw. The system works in conjunction with their guide rail to give you consistent rip cuts.
The guide has a pair of stops that hold the edge of the material parallel to the rip guide — you can adjust them to make cuts up to 25-19/32″ deep. A separate extension attaches to the parallel guides with a thumb screw and allows you to make repeatable narrow rip cuts from 1/16″ to 7-11/16″.
Festool sells just the parallel guides for $230, the parallel guide extensions which can only be used in conjunction with the parallel guides for $130, and a set combining both the parallel guides and the extensions for $325, saving you $35. They sell the guide rail separately or packaged with other tools.
Festool just released their parallel guide March 1, 2009, so watch for the usual retailers of Festool products to carry them any day now.