As a disclaimer, I have never used routing, and because of that I can only provide insight into the following enhancement based on what other users have posted. Solidworks 2009 adds the ability to add ribbon cables into assemblies:
If your an engineer that designs things with ribbon cables, this should be a very good addition for you. Here is a few quote from the discussion about this function:
Ribbon cable is indeed driven purely through autoroute. There is a manual routing method that is available within autorout. Ribbonc can be flexible or folded, or both mixed together. As for all routing the optimum way to us it is to route through clips. If in the real world there is no clip used it is best to use a dummy clip (or virtual clip). This is just a clip that has little visible geometry and is marked as ignore for BOM.
This new feature looks cool enought that maybe I will start to play with routing just a little bit.