This is how I display "Last Played" and "Play Count" For "Last Played," it shows the last played date or "Never" if it's never been played. For "Play Count" it shows the count if it's greater than zero and doesn't show up if it's zero.
You could do something similar, obviously, with any field.
Played:$If(<Last Played>="Unknown"," Never"," "<Last Played>" "$If(<Play Count>>0," ("<Play Count>"x)",))
The functions Wiki page referenced above describes all these useful things.