FolderMenu is one of those things that, after a very short time, you begin to wonder how you managed without it.  It is very simple – with a click of the middle mouse button, you can bring up a list of regularly used folders.  This can be done on many open/save dialogue boxes, proving it to be very useful.  If there is an application that is currently uncatered for, it can be added.  The only downside is that it can be a little confusing to get it set up – also the website leaves a bit to be desired – it is translated from the original Japanese and so sometimes can be hard to follow.  This aside, FolderMenu is well worth checking out.