OS X 10.8 or later. Set Last Played/Last Skipped date of selected tracks to a new date, with option to increase or decrease Plays/Skips, or set to no date and no Plays/Skips.
Also see Add or Subtract Play Count.
Like so. The Last Played date of the selected tracks will be set to June 10, 2014 at 9:45AM and the Plays will be decreased by 3. The latter is an option that can be toggled on and off with the checkbox.
Perhaps Also of Interest...
downloaded 44s ago
Set the Plays of selected tracks.
downloaded 1m 37s ago
Perform search-and-replace on text in your choice of tags
downloaded 4m 16s ago
Create a Ringtone track from a selected track
downloaded 9m 7s ago
Convert selected tracks and export the converted files to a new folder
downloaded 23m 7s ago
Exports and then re-imports selected tracks' artwork
downloaded 26m 14s ago
Applet assists with swapping, copying, appending data between track tags