I hate hunting for radio frequencies in flight. Of course, they're often in the GPS database but sometimes I don't want the distraction of twiddling knobs, and folding charts to find the frequency list can be a safety hazzard.
Since I just got my new charts in the mail, I came up with a good use for the expired ones. I verified the old chart's frequency info was identical to the new chart and cut-out the frequency list from the old chart. I then taped it to the clipboard of my Zuluboard, under all the reference cards. Bingo, no more hunting for the frequency list or the frequency for any airport on my TAC.