Special Pulldown Menus

Analyzer Software is experimenting with a new type of pulldown menu to help with the selection of game and contact parameters.  This pulldown menus have checkboxes and look like the following:

What is special with this menu is that you can select multiple entries from the pulldown by clicking the checkbox.  When searching or displaying data, all checked items are displayed.  If no item is checked, all items are displayed, the "All" items entry does not have to be selected.  This is a experimental feature being used in the software and any feedback would be appreciated.