I use FinderPop about a hundred times a day, particularly the "SwitchToFinder/HideOthers" command. Nice if you work in a lot of applications at the same time.
FinderPop also lets you add items such as an alias to frequently used apps, and you can set it up to access by clicking anywhere in the menu bar, rather than going to the apple menu. saves a bit of mouse movement. Access to Contextual Menus without holding down the Control key is another plus, although you can set up a 2-button mouse to do the same thing with the right-click button.
The price is right, too. Pintware, available at
www.finderpop.com
It's not something I have active in my Pro Tools extension set, nor would I recommend using it with Pro Tools.