Set the Plays ("Play Count" before iTunes v9.2) of the selected tracks to a user-entered number (they will all be set to the same number). If this number is 0 then the Last Played date of each track will be erased. (iTunes has the ability to "Reset Plays" to 0 from a track's contextual menu.)
Also see New Last Played Date and Add or Subtract Play Count.
Edit a selection of iTunes tracks' tags "old-school"
Export artwork of selected tracks to parent or specified folder
Remove iTunes tracks disassociated from files
Display, create text file listing info of dead tracks
Apply selected CD's CD Text to its disc and track tags
Assists with finding truncated iTunes Match tracks