Ummm..., er...., ah... Enhanced File Dialog "Enhance(s) your common file dialogs with additional features, including most recently used folders, shortcuts, sorting options, custom sizing, text shortcuts, grid lines, and more! " As far as I can tell, it doesn't even have a website devoted to it - I cribbed the above from the history file.
What I like best about it is that it resizes my dialogs and makes the places bar much more useful - something that none of the other dialog extenders that I have tried do. It gives you the same flexibility that the Office 2003 (and XP?) places bar provides and enables it in all dialog boxes. You can set the app to ignore specific applications (Scansoft/Nuance's PDF Converter must be ignored for example as the zdplus.exe component crashes when EFD modifies its dialogs) and you can force EFD to hook into other processes that aren't automaticlly enhanced, Foxit Reader for example. The recent folders and recent files are nicely implemented as well - links on the places bar. All in all, I like it because it is configureable.
Here's a screenshot of my Notepad "save as" dialog:Enhanced File Dialog