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 1m 38s ago
Locates pairs of track entries pointing to the same file
downloaded 2m 41s ago
Gather audio tracks whose files contain no artwork metadata
downloaded 11m 28s ago
Restore each selected track's artwork from an image file stored in its Album folder
downloaded 15m 52s ago
Remove iTunes tracks disassociated from files
downloaded 16m 38s ago
Exports and then re-imports selected tracks' artwork
downloaded 18m 3s ago
Export artwork of selected tracks to parent or specified folder